TECHNICAL FIELD
[0001] The present disclosure relates to the technical field of RGB light-mixing illumination,
and specifically to a five-way linear color-lamp circuit.
BACKGROUND ART
[0002] There are various dimming control circuits on the market, but most of the dimming
control circuits have few functions, and some lack a power regulation function, so
that a power supply circuit can only drive lamps adapted to power thereof. In addition,
some dimming control circuits have poor dimming precision, which affects user experience.
[0003] In addition, a single dimming control circuit is more and more widely used to simultaneously
drive a plurality of power supply circuits. However, as different power supply circuits
may have different turn-on conditions and turn-off conditions, when all the power
supply circuits are controlled to be simultaneously turned off or turned on by the
dimming control circuit, on and off states of some power supply circuits may be inconsistent,
thus causing the lamps to light off or light up one after another, and reducing user
experience.
[0004] Conventionally, RGB IC has a linear scheme, and white-light IC has a switch scheme,
in which lamps are turned on and off by a mechanical switch or a remote control/APP,
and lamps of white light and RGB light up or light off asynchronously (when being
turned on, RGB lamp quickly lights up, but white-light lamp slowly lights up; when
being turned off, the RGB lamp quickly lights off, but the white-light lamp slowly
lights off).
SUMMARY
[0005] In order to achieve the above objective, the present disclosure uses the following
technical solutions.
[0006] A five-way linear color-lamp circuit, including: a rectifying circuit, a valley-fill
line, a switch constant-voltage power supply line, an RGBCW linear control line, a
3.3 V power supply line and a wireless module, wherein the rectifying circuit is configured
to rectify mains supply; the valley-fill line is configured to filter the rectified
mains supply; the switch constant-voltage power supply line is configured to supply
power to the RGBCW linear control line; the RGBCW linear control line is configured
to adjust luminance of a light source and a color temperature of a color lamp, specifically
to adjust RGBCW, i.e., to adjust red light (RED), green light (GREEN), blue light
(BLUE), cold light (COOL), and warm light (WARM); the 3.3 V power supply line is configured
to provide 3.3 V constant-voltage power supply for the wireless module; and the wireless
module is configured to receive the luminance of the light source and a color-temperature
signal sent by a user, and send a control signal to the RGBCW linear control line.
[0007] Through the above technical solution, the white light and the RGB are composed of
five linear ICs, so that lamps of white light and RGB, when being turned on and off,
will not light up or light off asynchronously due to long MOS switch time and long
charge and discharge time of electrolytic capacitor.
[0008] Specifically, an inductance coil L1, a resistor R0, a capacitor C1, a capacitor C2
and a diode D6 are further provided between the rectifying circuit and the valley-fill
line, wherein one end of the inductance coil L1 is simultaneously connected to the
rectifying circuit, one end of the resistor R0 and one end of the capacitor C1, and
the other end of the inductance coil L1 is connected to an anode of the diode D6;
the other end of the capacitor C1 is connected to one end of the capacitor C2; the
other end of the capacitor C2 is simultaneously connected to the other end of the
resistor R0 and the valley-fill line; and a cathode of the diode D6 is connected to
the valley-fill line.
[0009] Through the above technical solution, a π-type filter circuit is formed by the inductance
coil and the capacitors, so as to inhibit differential-mode interference.
[0010] Specifically, the valley-fill line includes a capacitor EC1, a capacitor EC2, a diode
D8, a diode D9 and a diode D10, wherein an anode of the capacitor EC1 is simultaneously
connected to a cathode of the diode D8 and an anode of the diode D9, and a cathode
of the capacitor EC1 is simultaneously connected to the cathode of the diode D6, a
cathode of the diode D10 and the switch constant-voltage power supply line; a cathode
of the capacitor EC2 is simultaneously connected to a cathode of the diode D9 and
an anode of the diode D10, and an anode of the capacitor EC2 is simultaneously connected
to an anode of the diode D8 and the switch constant-voltage power supply line.
[0011] Specifically, the valley-fill line includes a capacitor EC1, a capacitor EC2, a diode
D8, a diode D9 and a diode D10, wherein an anode of the capacitor EC1 is simultaneously
connected to a cathode of the diode D8 and an anode of the diode D9, and a cathode
of the capacitor EC1 is simultaneously connected to the cathode of the diode D6, a
cathode of the diode D10 and the switch constant-voltage power supply line; a cathode
of the capacitor EC2 is simultaneously connected to a cathode of the diode D9 and
an anode of the diode D10, and an anode of the capacitor EC2 is simultaneously connected
to an anode of the diode D8 and the switch constant-voltage power supply line.
[0012] Specifically, the switch constant-voltage power supply line includes: a main IC power
supply control chip U1, a capacitor C14, a resistor R15, a diode D11, a capacitor
EC3, a resistor R20, a resistor R21, an inductance coil L2, a resistor R14, a resistor
R16, a capacitor CY1, a diode D12, a diode D13 and a resistor RS3, wherein the main
IC power supply control chip U1 is simultaneously connected to one end of the capacitor
C14, the resistor R14, the resistor R15, the resistor R16, the resistor R20 and the
resistor R21, and the valley-fill line; the inductance coil L2 has one end simultaneously
connected to the inductor C14, the resistor R14, the resistor R20, the resistor R21
and a cathode of the diode D13, and the other end simultaneously connected to the
capacitor CY1, an anode of the diode D12, the resistor RS3, an anode of the diode
D11 and a cathode of the capacitor EC3; the diode D11 has a cathode connected to the
resistor R15, and an anode simultaneously connected to the cathode of the capacitor
EC3, the resistor RS3 and the capacitor CY1; an anode of the capacitor EC3 is simultaneously
connected to an anode of the diode D13, the resistor RS3 and the valley-fill line;
and the diode D12 has a cathode connected to the other end of the resistor R16, and
an anode simultaneously connected to the capacitor CY1 and the RGBCW linear control
line.
[0013] Specifically, the RGBCW linear control line includes: a control chip U5, a resistor
R17, a resistor R18, a red-light-emitting diode group, a green-light-emitting diode
group, a blue-light-emitting diode group, a color-light-emitting diode group and a
color-temperature light-emitting diode group, wherein the control chip U5 is provided
with five control-signal output pins, wherein a first control-signal output pin is
connected to the red-light-emitting diode group, a second control-signal output pin
is connected to the green-light-emitting diode group, a third control-signal output
pin is connected to the blue-light-emitting diode group, a fourth control-signal output
pin is connected to the color-light-emitting diode group, and a fifth control-signal
output pin is connected to the color-temperature light-emitting diode group; the control
chip U5 is simultaneously connected to one end of the resistor R17 and one end of
the resistor R18; and the other end of the resistor R17 is connected to the other
end of the resistor R18.
[0014] Specifically, the 3.3 V power supply line includes: a control chip U4, a diode D7,
a capacitor EC6, a resistor RS1, a resistor RS2, a capacitor EC4 and an inductance
coil L3, wherein the control chip U4 is simultaneously connected to a cathode of the
diode D7, a cathode of the capacitor EC6, two ends of the inductance coil L3, two
ends of the resistor RS1, a cathode of the capacitor EC4 and one end of the resistor
RS2; the resistor RS1 has one end connected to one end of the inductance coil L3 and
the other end simultaneously connected to a cathode of the capacitor EC4 and one end
of the resistor RS2; and the other end of the resistor RS2 is connected to an anode
of the capacitor EC4.
[0015] Specifically, the wireless module includes: a communication chip, a resistor R01,
a resistor R02 and a capacitor CO2, wherein the communication chip supports communication
of Wifi, Zigbee and Bluetooth; the communication chip is simultaneously connected
to one end of the resistor R01, one end of the resistor R02 and one end of the capacitor
CO2; the other end of the resistor R01 is connected to the 3.3 V power supply line;
and the other end of the resistor R02 is connected to the other end of the capacitor
CO2.
[0016] Specifically, a pin 1 of the main IC power supply control chip U1 is connected to
one end of the capacitor C14 and one end of the resistor R15; a pin 3 of the main
IC power supply control chip U1 is connected to one end of the resistor R16 and one
end of the resistor R14; a pin 5 of the main IC power supply control chip U1 is connected
to the valley-fill line; a pin 4 of the main IC power supply control chip U1 is connected
to one end of the resistor R21 and one end of the resistor R21; a pin GND of the main
IC power supply control chip U1 is connected to the other end of the capacitor C14,
the other end of the resistor R21, the other end of the resistor R20, one end of the
inductance coil L2, the other end of the resistor R14 and the cathode of the diode
D13.
[0017] Specifically, a pin 5 of the control chip U4 is connected to the cathode of the diode
D7 and the cathode of the capacitor EC6; a pin 8 of the control chip U4 is connected
to one end of the inductance coil L3; a pin 1 of the control chip U4 is connected
to the other end of the inductance coil L3 and one end of the resistor RS1; a pin
2 of the control chip U4 is connected to the other end of the resistor RS1, the cathode
of the capacitor EC4 and one end of the resistor RS2; and a pin 3 of the control chip
U4 is connected to a pin 4 of the control chip U4.
[0018] The present disclosure has the following beneficial effects.
[0019] This technology can realize that the lamps will not light up or off asynchronously
when being turned on or off, and also can improve the experience of asynchronization
of color lamp and white light when being turned on and off. Moreover, it has cost
advantage.
BRIEF DESCRIPTION OF DRAWINGS
[0020] The drawings are included so as to provide further understanding to the embodiments,
and the drawings are incorporated into the present specification and constitute a
part of the present specification. The drawings illustrate the embodiments and are
used to explain the principle of the present disclosure together with the description.
Other embodiments and many expected advantages of the embodiments will be readily
recognized, because they become better understood with reference to the following
detailed description. Components in the drawings are not necessarily scaled. Like
reference signs indicate corresponding similar components.
FIG. 1 is a circuit diagram of a five-way linear color-lamp circuit according to the
present disclosure;
FIG. 2 is a circuit diagram of a wireless module of a five-way linear color-lamp circuit
according to the present disclosure;
FIG. 3 is a circuit diagram of a 3.3 V power supply line of a five-way linear color-lamp
circuit according to the present disclosure;
FIG. 4 is a circuit diagram of a valley-fill line of a five-way linear color-lamp
circuit according to the present disclosure;
FIG. 5 is a circuit diagram of a rectifying circuit of a five-way linear color-lamp
circuit according to the present disclosure;
FIG. 6 is a circuit diagram of a switch constant-voltage power supply line of a five-way
linear color-lamp circuit according to the present disclosure; and
FIG. 7 is a circuit diagram of an RBGCW linear control line of a five-way linear color-lamp
circuit according to the present disclosure.
DETAILED DESCRIPTION OF EMBODIMENTS
[0021] In the following detailed description, reference is made to the drawings, which form
a part of the detailed description and are shown through illustrative embodiments
in which the present disclosure can be implemented. In this regard, directional terms
such as "top", "bottom", "left", "right", "upper", and "lower" are used with reference
to orientations in the drawings described. As components in the embodiments may be
positioned in several different orientations, directional terms are used for illustration
purposes and directional terms are by no means limiting. It should be understood that
other embodiments may be utilized or logical changes may be made without departing
from the scope of the present disclosure. Therefore, the following detailed description
is not to be taken in a limiting sense, and the scope of the present disclosure is
defined by the appended claims.
[0022] FIG. 1 is a circuit diagram of a five-way linear color-lamp circuit according to
the present disclosure. As shown in FIG. 1, the five-way linear color-lamp circuit
includes: a rectifying circuit, a valley-fill line, a switch constant-voltage power
supply line, an RGBCW linear control line, a 3.3 V power supply line and a wireless
module, wherein the rectifying circuit is configured to rectify mains supply; the
valley-fill line is configured to filter the rectified mains supply; the switch constant-voltage
power supply line is configured to supply power to the RGBCW linear control line;
the RGBCW linear control line is configured to adjust luminance of a light source
and a color temperature of a color lamp; the 3.3 V power supply line is configured
to provide 3.3 V constant-voltage power supply for the wireless module; and the wireless
module is configured to receive the luminance of the light source and a color-temperature
signal sent by a user, and send a control signal to the RGBCW linear control line.
[0023] Besides, an inductance coil L1, a resistor R0, a capacitor C1, a capacitor C2 and
a diode D6 are further provided between the rectifying circuit and the valley-fill
line, wherein one end of the inductance coil L1 is simultaneously connected to the
rectifying circuit, one end of the resistor R0 and one end of the capacitor C1, and
the other end of the inductance coil L1 is connected to an anode of the diode D6;
the other end of the capacitor C1 is connected to one end of the capacitor C2; the
other end of the capacitor C2 is simultaneously connected to the other end of the
resistor R0 and the valley-fill line; and a cathode of the diode D6 is connected to
the valley-fill line.
[0024] FIG. 2 is a circuit diagram of a wireless module of a five-way linear color-lamp
circuit according to the present disclosure. As shown in FIG. 2, the wireless module
includes: a communication chip, a resistor R01, a resistor R02 and a capacitor CO2,
wherein the communication chip supports communication of Wifi, Zigbee and Bluetooth;
the communication chip is simultaneously connected to one end of the resistor R01,
one end of the resistor R02 and one end of the capacitor CO2; the other end of the
resistor R01 is connected to the 3.3 V power supply line; and the other end of the
resistor R02 is connected to the other end of the capacitor CO2.
[0025] FIG. 3 is a circuit diagram of the 3.3 V power supply line of the five-way linear
color-lamp circuit according to the present disclosure. As shown in FIG. 3, the 3.3
V power supply line includes: a control chip U4, a diode D7, a capacitor EC6, a resistor
RS1, a resistor RS2, a capacitor EC4 and an inductance coil L3, wherein the control
chip U4 is simultaneously connected to a cathode of the diode D7, a cathode of the
capacitor EC6, two ends of the inductance coil L3, two ends of the resistor RS1, a
cathode of the capacitor EC4 and one end of the resistor RS2; the resistor RS1 has
one end connected to one end of the inductance coil L3 and the other end simultaneously
connected to a cathode of the capacitor EC4 and one end of the resistor RS2; and the
other end of the resistor RS2 is connected to an anode of the capacitor EC4.
[0026] Specifically, a pin 5 of the control chip U4 is connected to the cathode of the diode
D7 and the cathode of the capacitor EC6; a pin 8 of the control chip U4 is connected
to one end of the inductance coil L3; a pin 1 of the control chip U4 is connected
to the other end of the inductance coil L3 and one end of the resistor RS1; a pin
2 of the control chip U4 is connected to the other end of the resistor RS1, the cathode
of the capacitor EC4 and one end of the resistor RS2; and a pin 3 of the control chip
U4 is connected to a pin 4 of the control chip U4.
[0027] FIG. 4 is a circuit diagram of the valley-fill line of the five-way linear color-lamp
circuit according to the present disclosure. As shown in FIG. 4, the valley-fill line
includes a capacitor EC1, a capacitor EC2, a diode D8, a diode D9 and a diode D10,
wherein an anode of the capacitor EC1 is simultaneously connected to a cathode of
the diode D8 and an anode of the diode D9, and a cathode of the capacitor EC1 is simultaneously
connected to the cathode of the diode D6, a cathode of the diode D10 and the switch
constant-voltage power supply line; a cathode of the capacitor EC2 is simultaneously
connected to a cathode of the diode D9 and an anode of the diode D10, and an anode
of the capacitor EC2 is simultaneously connected to an anode of the diode D8 and the
switch constant-voltage power supply line.
[0028] FIG. 6 is a circuit diagram of the switch constant-voltage power supply line of the
five-way linear color-lamp circuit according to the present disclosure. As shown in
FIG. 6, the switch constant-voltage power supply line includes: a main IC power supply
control chip U1, a capacitor C14, a resistor R15, a diode D11, a capacitor EC3, a
resistor R20, a resistor R21, an inductance coil L2, a resistor R14, a resistor R16,
a capacitor CY1, a diode D12, a diode D13 and a resistor RS3, wherein the main IC
power supply control chip U1 is simultaneously connected to one end of the capacitor
C14, the resistor R14, the resistor R15, the resistor R16, the resistor R20 and the
resistor R21, and the valley-fill line; the inductance coil L2 has one end simultaneously
connected to the inductor C14, the resistor R14, the resistor R20, the resistor R21
and a cathode of the diode D13, and the other end simultaneously connected to the
capacitor CY1, an anode of the diode D12, the resistor RS3, an anode of the diode
D11 and a cathode of the capacitor EC3; the diode D11 has a cathode connected to the
resistor R15, and an anode simultaneously connected to the cathode of the capacitor
EC3, the resistor RS3 and the capacitor CY1; an anode of the capacitor EC3 is simultaneously
connected to an anode of the diode D13, the resistor RS3 and the valley-fill line;
the diode D12 has a cathode connected to the other end of the resistor R16, and an
anode simultaneously connected to the capacitor CY1 and the RGBCW linear control line.
[0029] Specifically, a pin 1 of the main IC power supply control chip U1 is connected to
one end of the capacitor C14 and one end of the resistor R15; a pin 3 of the main
IC power supply control chip U1 is connected to one end of the resistor R16 and one
end of the resistor R14; a pin 5 of the main IC power supply control chip U1 is connected
to the valley-fill line; a pin 4 of the main IC power supply control chip U1 is connected
to one end of the resistor R21 and one end of the resistor R21; a pin GND of the main
IC power supply control chip U1 is connected to the other end of the capacitor C14,
the other end of the resistor R21, the other end of the resistor R20, one end of the
inductance coil L2, the other end of the resistor R14 and the cathode of the diode
D13.
[0030] FIG. 7 is a circuit diagram of the RBGCW linear control line of the five-way linear
color-lamp circuit according to the present disclosure. As shown in FIG. 7, the RGBCW
linear control line includes: a control chip U5, a resistor R17, a resistor R18, a
red-light-emitting diode group, a green-light-emitting diode group, a blue-light-emitting
diode group, a color-light-emitting diode group and a color-temperature light-emitting
diode group, wherein the control chip U5 is provided with five control-signal output
pins, wherein a first control-signal output pin is connected to the red-light-emitting
diode group, a second control-signal output pin is connected to the green-light-emitting
diode group, a third control-signal output pin is connected to the blue-light-emitting
diode group, a fourth control-signal output pin is connected to the color-light-emitting
diode group, and a fifth control-signal output pin is connected to the color-temperature
light-emitting diode group; the control chip U5 is simultaneously connected to one
end of the resistor R17 and one end of the resistor R18; and the other end of the
resistor R17 is connected to the other end of the resistor R18.
[0031] Obviously, those skilled in the art could make various modifications and changes
to the embodiments of the present disclosure without departing from the spirit and
scope of the present disclosure. In this way, if these modifications and changes are
within the scope of the claims of the present disclosure and equivalents thereof,
the present disclosure is further intended to cover these modifications and changes.
The word "including" does not exclude the presence of other components or steps not
listed in the claims. The mere fact that certain measures are defined in mutually
different dependent claims does not indicate that a combination of these measures
cannot be used to gain profit. Any reference signs in the claims should not be considered
as limiting the scope.
1. A five-way linear color-lamp circuit, comprising: a rectifying circuit, a valley-fill
line, a switch constant-voltage power supply line, an RGBCW linear control line, a
3.3 V power supply line and a wireless module, characterized that the rectifying circuit
is configured to rectify mains supply; the valley-fill line is configured to filter
the rectified mains supply; the switch constant-voltage power supply line is configured
to supply power to the RGBCW linear control line; the RGBCW linear control line is
configured to adjust a luminance of a light source and a color temperature of a color
lamp; the 3.3 V power supply line is configured to provide 3.3 V constant-voltage
power supply for the wireless module; and the wireless module is configured to receive
the luminance of the light source and a color-temperature signal sent by a user, and
send a control signal to the RGBCW linear control line.
2. The five-way linear color-lamp circuit according to claim 1, wherein an inductance
coil L1, a resistor R0, a capacitor C1, a capacitor C2 and a diode D6 are further
provided between the rectifying circuit and the valley-fill line, wherein one end
of the inductance coil L1 is simultaneously connected to the rectifying circuit, one
end of the resistor R0 and one end of the capacitor C1, and the other end of the inductance
coil L1 is connected to an anode of the diode D6; the other end of the capacitor C1
is connected to one end of the capacitor C2; the other end of the capacitor C2 is
simultaneously connected to the other end of the resistor R0 and the valley-fill line;
and a cathode of the diode D6 is connected to the valley-fill line.
3. The five-way linear color-lamp circuit according to claim 2, wherein the valley-fill
line comprises a capacitor EC1, a capacitor EC2, a diode D8, a diode D9 and a diode
D10, wherein an anode of the capacitor EC1 is simultaneously connected to a cathode
of the diode D8 and an anode of the diode D9, and a cathode of the capacitor EC1 is
simultaneously connected to the cathode of the diode D6, a cathode of the diode D10
and the switch constant-voltage power supply line; a cathode of the capacitor EC2
is simultaneously connected to a cathode of the diode D9 and an anode of the diode
D10, and an anode of the capacitor EC2 is simultaneously connected to an anode of
the diode D8 and the switch constant-voltage power supply line.
4. The five-way linear color-lamp circuit according to claim 1, wherein the switch constant-voltage
power supply line comprises: a main IC power supply control chip U1, a capacitor C14,
a resistor R15, a diode D11, a capacitor EC3, a resistor R20, a resistor R21, an inductance
coil L2, a resistor R14, a resistor R16, a capacitor CY1, a diode D12, a diode D13
and a resistor RS3, wherein the main IC power supply control chip U1 is simultaneously
connected to one end of the capacitor C14, the resistor R14, the resistor R15, the
resistor R16, the resistor R20 and the resistor R21, and the valley-fill line; the
inductance coil L2 has one end simultaneously connected to the inductor C14, the resistor
R14, the resistor R20, the resistor R21 and a cathode of the diode D13, and the other
end simultaneously connected to the capacitor CY1, an anode of the diode D12, the
resistor RS3, an anode of the diode D11 and a cathode of the capacitor EC3; the diode
D11 has a cathode connected to the resistor R15, and an anode simultaneously connected
to the cathode of the capacitor EC3, the resistor RS3 and the capacitor CY1; an anode
of the capacitor EC3 is simultaneously connected to an anode of the diode D13, the
resistor RS3 and the valley-fill line; and the diode D12 has a cathode connected to
the other end of the resistor R16, and an anode simultaneously connected to the capacitor
CY1 and the RGBCW linear control line.
5. The five-way linear color-lamp circuit according to claim 1, wherein the RGBCW linear
control line comprises: a control chip U5, a resistor R17, a resistor R18, a red-light-emitting
diode group, a green-light-emitting diode group, a blue-light-emitting diode group,
a color-light-emitting diode group and a color-temperature light-emitting diode group,
wherein the control chip U5 is provided with five control-signal output pins, wherein
a first control-signal output pin is connected to the red-light-emitting diode group,
a second control-signal output pin is connected to the green-light-emitting diode
group, a third control-signal output pin is connected to the blue-light-emitting diode
group, a fourth control-signal output pin is connected to the color-light-emitting
diode group, and a fifth control-signal output pin is connected to the color-temperature
light-emitting diode group; the control chip U5 is simultaneously connected to one
end of the resistor R17 and one end of the resistor R18; and the other end of the
resistor R17 is connected to the other end of the resistor R18.
6. The five-way linear color-lamp circuit according to claim 1, wherein the 3.3 V power
supply line comprises: a control chip U4, a diode D7, a capacitor EC6, a resistor
RS1, a resistor RS2, a capacitor EC4 and an inductance coil L3, wherein the control
chip U4 is simultaneously connected to a cathode of the diode D7, a cathode of the
capacitor EC6, two ends of the inductance coil L3, two ends of the resistor RS1, a
cathode of the capacitor EC4 and one end of the resistor RS2; the resistor RS1 has
one end connected to one end of the inductance coil L3 and the other end simultaneously
connected to a cathode of the capacitor EC4 and one end of the resistor RS2; and the
other end of the resistor RS2 is connected to an anode of the capacitor EC4.
7. The five-way linear color-lamp circuit according to claim 1, wherein the wireless
module comprises: a communication chip, a resistor R01, a resistor R02 and a capacitor
CO2, wherein the communication chip supports communication of Wifi, Zigbee and Bluetooth;
the communication chip is simultaneously connected to one end of the resistor R01,
one end of the resistor R02 and one end of the capacitor CO2; the other end of the
resistor R01 is connected to the 3.3 V power supply line; and the other end of the
resistor R02 is connected to the other end of the capacitor CO2.
8. The five-way linear color-lamp circuit according to claim 4, wherein a pin 1 of the
main IC power supply control chip U1 is connected to one end of the capacitor C14
and one end of the resistor R15; a pin 3 of the main IC power supply control chip
U1 is connected to one end of the resistor R16 and one end of the resistor R14; a
pin 5 of the main IC power supply control chip U1 is connected to the valley-fill
line; a pin 4 of the main IC power supply control chip U1 is connected to one end
of the resistor R21 and one end of the resistor R21; a pin GND of the main IC power
supply control chip U1 is connected to the other end of the capacitor C14, the other
end of the resistor R21, the other end of the resistor R20, one end of the inductance
coil L2, the other end of the resistor R14 and the cathode of the diode D13.
9. A light-mixing method of the five-way linear color-lamp circuit according to claim
6, wherein a pin 5 of the control chip U4 is connected to the cathode of the diode
D7 and the cathode of the capacitor EC6; a pin 8 of the control chip U4 is connected
to one end of the inductance coil L3; a pin 1 of the control chip U4 is connected
to the other end of the inductance coil L3 and one end of the resistor RS1; a pin
2 of the control chip U4 is connected to the other end of the resistor RS1, the cathode
of the capacitor EC4 and one end of the resistor RS2; and a pin 3 of the control chip
U4 is connected to a pin 4 of the control chip U4.