10 Hz to 10 kHz VCO (CB8746E)

This 3-decade operating range VCO was found in a 90s Popular Electronics. The circuit uses components that admit of equivalents.

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Triac load control (CB4178E)
In the figure we have the conventional configuration to use a triac to control a power load from...
4 MHz TTL Oscillator (CB15760E)
This oscillator makes use of one of the inverters of an integrated circuit 7404. With circuits of the...
3 A L294 Solenoid Control (CB15152E)
The integrated circuit used by SGS is not common today. The circuit is from the 1982 SGS linear...