Two-tube regenerative receiver (T1595E)

This circuit is from a Radio Electronics from 1949. The circuit is battery powered and has high impedance listening.

Indicator light (CB22085E)
This circuit is intended for calls to the deaf and is indicated in an old English documentation. LEDs can be...
Erase oscillator (CB7338E)
Suggested by Mullard in a1969 documentation, this circuit generates the erasure signal for tape...
RF Oscillator LM3909 (CB15924E)
The main feature of this RF oscillator that operates in the range of 100 to 800 kHz is its low...