Precision Square Generator (CB6361E)

This 80's National Semiconductor circuit uses an era integrated circuit and symmetrical 5V power supply. Modern equivalent operational can be used.

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Diode test (CB20735E)
This simple diode test appears at other points in this section. Or circuit can be adapted to use...
10W Inverter Compound Amplifier LM1875 (CB26269E)
Found in Electronics Now magazine in an issue from the 90s, this circuit is different from the...
Phase Inverter (CB15065E)
This circuit inverts the phase of an audio signal, maintaining its intensity. The transistors can...