EP 0223503 A1 19870527 - A control circuit for a heating unit.

Title (en)

A control circuit for a heating unit.

Title (de)

Steuerungsschaltung für eine Heizeinheit.

Title (fr)

Circuit de commande pour une unité de chauffage.

Publication

EP 0223503 A1 19870527 (EN)

Application

EP 86308615 A 19861105

Priority

GB 8527683 A 19851109

Abstract (en)

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

F24C 15/10; H05B 3/74

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 (search report)

[A] US 4443690 A 19840417 - PAYNE THOMAS R [US], et al
[A] DE 3334425 A1 19850411 - LICENTIA GMBH [DE]
[XP] EP 0174774 A1 19860319 - THORN EMI APPLIANCES [GB]
[XP] GB 2170665 A 19860806 - THORN EMI DOMESTIC APPLIANCES
[A] GB 2114829 A 19830824 - BOSCH SIEMENS HAUSGERAETE
[A] GB 2060329 A 19810429 - THORN DOMESTIC APPLIANCES LTD

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