This wide-range radiation monitor was found in a 1980s documentation. The circuit uses a diode as a sensor and is quite critical requiring shielding shown in dashes to prevent snoring due to gain.
Random pulses are produced by this multiple oscillator using unijuncion Transistors. The...
Two alternating are produced by this circuit. The output signal must be applied to a power stage...
This receiver for an audio link by modulated light was found in a 90s Elektor. Transistors are common...