Document Type and Number:
Japanese Patent JPH0154931
Kind Code:
B2
Abstract:
1. Electric device (7) comprising a switch (5) and a protective circuit which interrupts the power supply for driving the device (7) if the power supply of the switched-on device (7) fails and the switch (5) is switched on at the time the power supply is restored, characterised in that a triac (11) is inserted into the supply circuit, that the triac (11) is connected to a first firing circuit (12, 14) and to a second firing circuit (13, 15, 16), the first firing circuit (12, 14) being switchable by means of the switch (5) and the second firing circuit (13, 15, 16) containing a phase-shifting circuit (15, 16) which repeatedly fires the triac (11), which is first fired via the first firing circuit (12, 14), if the power supply has not been interrupted.
Inventors:
FURIITORIHI HORUNUNKU
GERUHARUTO KUURUMAN
GYUNTAA UAARU
GERUHARUTO KUURUMAN
GYUNTAA UAARU
Application Number:
JP14893881A
Publication Date:
November 21, 1989
Filing Date:
September 22, 1981
Export Citation:
Assignee:
BOSCH GMBH ROBERT
International Classes:
H01H83/12; H02H3/24; H02H11/00
Next Patent: JPH0154932