Temperature control (CB10167E)

This circuit controls a direct current heating element. Power transistors must be load dependent. The components support modern equivalents.

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Nicad Charger (CB13544E)
This circuit is intended for charging 12 V Nicad batteries, which corresponds to 10 common...
Discharger limiter for Nicad (CB9546E)
This circuit for discharging NiCad batteries limits the current to a value that can be adjusted in the...
Variable voltage regulator (CB21192E)
This current-limited circuit was found in a Popular Electronics from the 90's. ...