Three-input majority gate (CB7248E)

This interesting logic circuit was found in a manual of neon lamp applications.

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Divider by 5 Counter (CB25363E)
This TTL circuit was found in the December 1990 issue of Radio Electronics magazine. The circuit has...
Ohmmeter and Voltmeter 741 (CB14017E)
We found this circuit in Sperimentare magazine number 4 of 1977. The magazine no longer exists, but...
Schmitt trigger oscillator (CB9628E)
This crystal configuration can be made with triggers of any logic. The frequency is given by the...