Smart Charger (CB26305E)

This circuit was found in Radio Electronics magazine from the 90's. The circuit is for small NiCad batteries.

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Multitester (CB3834E)
This simple multitester tests continuity, semiconductors, leaks, and other common component...
High Input Impedance Amplifier (CB4027E)
This configuration can be implemented with equivalent operations. The circuit is from the 1990...
Tesla Coil (CB26185E)
This circuit is one of many that we have in our section. It was taken from the Electronics...