This excellent tube preamplifier was found in Radio Electronics magazine from July 1958. The power supply was not included. The circuit has several inputs.
The frequency of this oscillator depends on the inductor and capacitors in parallel with it. In...
This circuit allows reception and decoding of 50 kHz FM modulated optical signals. The circuit can...
This circuit was found in Motorola's 1967 documentation. The circuit makes use of power...