This circuit was taken from old American documentation. The transistors used make it possible to control a motor with up to 2 A of current. They must be equipped with heat sinks.
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This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used...
This circuit uses an operational amplifier that is still common today. The indication is made by...
The circuit shown is from the National Semiconductor's Linear Applications Handbook. The CI is not...