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This variable frequency oscillator was found in an old American documentation. Transistors allow more modern equivalents and coil data are found next to the diagram for several frequency bands.
This excellent 30 W tube amplifier appeared in the April 1963 Radio Electronics magazine that...
This simple circuit serves to demonstrate the working principle of a Set-Reset flip-flop (S-R or...
The possibility of using the 4013 in the monostable configuration added to the input sensitivity of the...