SCR Alarm oscillator (CB6114E)

This circuit was suggested by General Electric in a 1965 documentation. The circuit can be implemented with equivalent SCR.

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Rectangular Generator with Adjustable Space Mark (CB12079E)
This circuit was found in a 1978 publication. Equivalent operational amplifiers can be used. The...
Variable Gain Differential Amplifier (CB14119E)
This instrumentation circuit was obtained in the National Semiconductor's Linear Applications...
Wien Bridge Oscillator (CB23602E)
This circuit produces a sinusoidal signal whose frequency can be calculated using the formula in...