The figure shows a white noise generator circuit that uses a transistor junction to generate the signal. The circuit is from a Radio Electronics magazine from March 1990.
Found in a 1968 Ferranti documentation, this circuit can be implemented with modern equivalent...
The purpose of this circuit found in an old Elektor is to light a lower power lamp when the bigger...
This circuit is from an old American amateur radio manual. The circuit shows how to use a Varicap...