Microcontroller controlled dimmer (CB25087E)

This circuit was found in a Radio Electronics magazine from October 1987. It can be used as a shield for incandescent and heating elements.

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TTL Logic Probe (CB1461E )
This circuit is from a 1977 documentation. It is powered by the power supply of the circuit under...
perature Controlled Oscillator (CB13025E)
Tem The CMOS oscillator illustrated in the figure has a frequency that depends on the temperature sensor, a...
Variable Frequency Oscillator (VFO) (CB13087E)
The Variable Frequency Oscillator (VFO) shown in the figure can generate signals in a frequency range...