10-Step Sine Generator (CB24472E)

This CMOS generator with the 4018 IC was found in a November 1976 Radio Electronics magazine. It uses a 741 op-amp as the audio amplifier.

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Power Supply from 0 to 12 V x 2 A (CB1252E)
This useful power supply can provide voltages from 0 to 12 V with currents up to 2 A, set in...
Low Power Limit Detector (CB5082E)
This circuit of old documentation can be implemented with modern operational amplifiers. The...
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The base of this circuit is 1/4 of an integrated circuit 4136 which consists of a quadruple 741....