Transistorised control circuit for motor vehicle lamp flasher - uses single transistor with collector coupled to control relay and emitter to current supply relay

摘要

The flasher control circuit esp. for motor vehicles, has a single transistor with its collector coupled to a control relay and with a current relay in its emitter circuit, linked to the control relay. The circuit flashes at a rate determined by the number of intact lamps, with the flashing rate independent of the supply voltage fluctuations. This circuit prevents voltage fluctuations. The flash generator (A) has three terminals (G, H, L). One (G) is connected to the positive pole of a battery (Ba) via ignition switch (Is). Another (L) is connected to the lamps (L1, L2) via direction switch (Ts). The third (H) is connected to the other side of the Lamps (L1, L2) and to the negative pole of the battery (Ba).