Found in a 90s Popular Electronics, this circuit fires an old flash of xenon from the pulse of light received by a sensor. The trigger, however, is made with a delay given by C2.
This circuit was found in a 90s Popular Electronics. It uses a varicap that admits equivalents. The...
This two-microphone amplifier was found in a April 1961 Radio Electronics Magazine. The circuit is...
This circuit is tuned to produce pulses of 1.5 ms and 5.5 ms of separation for various settings with...