Rugged lamp driver


Posted on Dec 8, 2012

This circuit is capable of driving filament lamps of nominal rating 200 mA at 60 V dc from a CMOS logic signal. The lamp or load is connected in series with the Darlington transistor TR1 and emitter resistor R5. The Zener diode ZD1 establishes a soft reference voltage on the collector of the optical coupler IC2.


Rugged lamp driver
Click here to download the full size of the above Circuit.

When the logic control signal from the processor switches the optocoupler on via IC1, base drive is applied to TR1 and the lamp is switched on.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

VHF/UHF TV modulator
Infra-red Level Detector with 555
Loudspeaker as a Microphone
Bridge circuit
Continuity tester for pcb
Visual modulation indicator
Sawtooth Converter
Synchronous Stepdown Switching Regulator Circuit
PID PROJECT
Servo Circuit Controls Sine-Wave Amplitude
ic speech
battery charger based on avr atmega
Dual AC radio remote control switch circuit diagram



Top