Twilight Simulator (CB26055E)

This circuit simulates dusk by slowly dimming an incandescent bulb. It was found in the August 1998 issue of Electronics Now magazine.

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Voltage Reducer (CB16492E)
This conventional series reducer circuit reduces the voltage of a 12 V battery to the selected value...
DC to DC Converter (CB13047E)
In the figure we have a converter that generates a negative voltage from a positive voltage...
Gate dip meter (CB9709E)
This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are...