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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Comparator with Hysteresis LM158 (CB4480E)
Other series operationals such as the LM258, LM358 and LM2904 can be used on this circuit of the...
Audio Preamplifier (CB18323E)
This old 1967 audio preamp uses germanium transistors. It was found in Japanese documentation at...
Timed Motor Drive (CB1550E )
The circuit of the figure consists of a motor timer that can delay drives for up to 15 minutes....