Speed Control (CB5943E)

This circuit meets applications in remote control. It allows to control a motor from input pulses. The circuit was found in a 1980s documentation.

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Balanced Modulator with Transistors (CB4237E)
Found in a 1980s telecommunications documentation, this balanced modulator circuit uses...
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This second mixer version is an improvement on CIR10339 using independent FETs for the inputs. The number...
1 kHz Tuned Filter with the 741 (CB12286E)
In this circuit, from a 1977 publication, we have the traditional version of a filter tuned to 1...