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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Voltage doubler for EEPROM programmer (CB9323E)
This circuit from the 90s, was found in an Electronic Design of the time. The components used are...
Two Phase Voltage Controlled Oscillator (CB13741E)
This circuit was found in an English technical documentation from 1973. The circuit generates...
30 mm Optocoupler (CB14668E)
The selected circuit was obtained in a Texas Instruments opto-electronics manual. The transistors can be...