EP 0603815 B1 19971008 - Electronic clock independent of main electricity supply
Title (en)
Electronic clock independent of main electricity supply
Title (de)
Netzunabhängige elektronische Uhr
Title (fr)
Montre électronique indépendante du réseau de courant
Publication
Application
Priority
DE 4244163 A 19921224
Abstract (en)
[origin: EP0603815A2] The invention relates to an electronic clock independent of line voltage, which has an electric circuit (1) which in addition to the time-keeping function is capable, given the fulfilment of a condition which can be stipulated, of executing a special function (3) which is activated only for a comparatively short period but requires a comparatively high load current, and which has a device (4) for monitoring the energy content of its electric energy source (2). The monitoring of the energy content is performed by measuring the output voltage of the energy source (2). According to the invention, from time to time the device (4) automatically activates the special function (3) of the clock, without fulfilment of the relevant condition which can be stipulated, for the purpose of testing the output voltage of the energy source (2) for a short period. For the case in which the output voltage is below a threshold voltage (42) which can be stipulated, the device outputs an optical or acoustic warning signal (41). <IMAGE>
IPC 1-7
IPC 8 full level
G04C 10/04 (2006.01)
CPC (source: EP)
G04C 10/04 (2013.01)
Designated contracting state (EPC)
AT CH DE GB LI
DOCDB simple family (publication)
EP 0603815 A2 19940629; EP 0603815 A3 19950222; EP 0603815 B1 19971008; AT E159106 T1 19971015; DE 4244163 A1 19940630; DE 59307500 D1 19971113
DOCDB simple family (application)
EP 93120601 A 19931221; AT 93120601 T 19931221; DE 4244163 A 19921224; DE 59307500 T 19931221