This well-designed bistable circuit was found in a 1970s documentation. Transistors can be current types and germanium diodes. The voltage depends on the logic used and can be made with 5 V.
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Found in Mullard's 1960s transistor manual, this circuit has components that depend on the...
This signal injector uses a single integrated circuit as an oscillator, producing rectangular...
This second amplifier is based on the integrated LM108 and has a differential input. The resistor...