Diode test (CB20735E)

This simple diode test appears at other points in this section. Or circuit can be adapted to use LEDs instead of ordinary lamps.

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Battery voltage monitor (CB7133E)
We found this circuit in a Popular Electronics from the 90's. The circuit activates an oscillator...
100W load simulator (CB21050E)
Found in an Electronic Design from the 90's, this circuit simulates a 100 W resistor. The power...
Single Flasher 4093 (CB13167E)
The configuration shown in the figure is quite simple and can be used to activate a signaling LED...