EP 0223503 B1 19920513 - A CONTROL CIRCUIT FOR A HEATING UNIT
Title (en)
A CONTROL CIRCUIT FOR A HEATING UNIT
Publication
Application
Priority
GB 8527683 A 19851109
Abstract (en)
[origin: EP0223503A1] A control circuit, for a heating unit including two or three lamps (11,12,13) emissive of infra-red radiation, includes a microprocessor (20) for selectively effecting phase and burst-fire control of power supplied to the lamps (11,12,13), to generate a desired heat output set by user-operable controls (21). The circuit also includes switching means (30) to achieve series and/or parallel arrangements of the lamps (11,12,13) to generate different power outputs. The microprocessor (20) is also arranged to provide phase control of power to the lamps (11,12,13) intermediate periods of energisation of the lamps during burst-fire control or to alternate between two different power outputs generated by series and/or parallel arrangements of the lamps (11,12,13) to achieve an average output.
IPC 1-7
IPC 8 full level
F24C 15/10 (2006.01); H05B 3/74 (2006.01)
CPC (source: EP)
F24C 15/106 (2013.01); H05B 3/744 (2013.01)
Citation (examination)
GB 2132060 A 19840627 - THORN EMI DOMESTIC APPLIANCES
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0223503 A1 19870527; EP 0223503 B1 19920513; AT E76243 T1 19920515; CA 1273389 A 19900828; DE 3685300 D1 19920617; ES 2030662 T3 19921116; GB 8527683 D0 19851211; GR 3005152 T3 19930524
DOCDB simple family (application)
EP 86308615 A 19861105; AT 86308615 T 19861105; CA 521962 A 19861031; DE 3685300 T 19861105; ES 86308615 T 19861105; GB 8527683 A 19851109; GR 920401496 T 19920713