Model contol (CB22185E)

This miniature railway control circuit was found in an English documentation from the 1980s. The integrated circuit is an operational amplifier.

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Crystal Radio (CB14727E)
This circuit is from a 1957 Raytheon transistor manual. The diode can be of general-purpose...
Temperature Compensation using a Diode (CB4142E)
The circuit presented shows how to use a diode in temperature compensation of a push-pull output...
High Stability Regulator (CB14162E)
The circuit shown is from National Semiconductor's Linear Applications Handbook, published in...