This circuit is from a 1965 Radio Electronics. The triggering transformer generates high voltage pulses. The generated light pulse depends on C1 and C2.
We found this alarm in a 1992 documentation. The circuit has several timings and the relay can...
This bridge circuit is designed for 8-ohm speakers delivering a few watts of power. The circuit is from...
This oscillator produces a sawtooth and square signals in the low frequency range. Other...