Non Inverting Amplifier (CB6433E)

Based on an operational of the time, this Popular Electronics circuit can be designed with any equivalent operational.

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Positive Voltage Comparator LM3900 (CB15622E)
The amplifiers of the LM3900 can also be used as voltage comparators in several projects. The...
Crystal unijunction oscillator (CB20679E)
This circuit was obtained in an Electronics World of 1969. It is a crystal oscillator with a 100...
Pulse Generator I (CB18967E)
This circuit produces a pulse train controlled by the output of a logic circuit or a...