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We found this circuit in GE's 1977 semiconductor manual. The optical isolator uses an opto-SCR, and the lamp must be 25 W maximum. Only incandescent lamps should be used.
We found this circuit in Radio Electronics Special Projects from 1992. The circuit turns on the...
We found this circuit in the Texas Instruments' Linear Circuits Applications. It uses an...
This capacitive sensor that operates with a high frequency oscillator was found in Radio...