Found in a 1965 Radio Shack documentation this oscillator can be used with modern general purpose transistors like the BC558. The transformer is the output type for transistor radios.
The block shown in the figure is a basic source with a configuration widely used in technical...
The output current of this source is determined by resistor R. For 20 ohms, we have 50 mA. For 10...
This circuit, for its simplicity and the fact of using a super-regenerative detector only works...