SUS (Silicon Unilateral Switches) with a 8 V trigger voltage used in the controlo f SCRs and other applications.
This circuit uses a photoransistor to control the frequency for this oscillator. Power supply...
We found this balanced modulator circuit for DSB and possibly SSB transmissions in US 1980s...
This circuit was found in a French magazine Toute LÉlectronique from 1978. Transistors are not...