7400 Oscillator (CB25015E)

This is one of the many 7400 oscillators we have in our circuit bank. It is crystal controlled and must be powered with a voltage of 5 V.

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Voltmeter with FET (CB13657E)
This FET voltmeter is from an old 1974 amateur radio publication. The circuit can use MPF102 or...
Precedence Indicator 2 (CB12329E)
This indicator was found in a 1974 publication, but it can be fitted with the BC548 transistor or...
Monostable with Input Lock LM339 (CB19794E)
This circuit was found in the comparator's own documentation, serving others in the same series. The...