This shield circuit with an optical coupler was found in an 90s EDN. The circuit can be used with voltages from 0 to 600 V with the indicated component values.
When the power is turned on, the output of this circuit goes to the “1“ logic level by a time...
This circuit is suggested by Texas Instruments in his Optoelectronics Sourcebook. Any photo...
This amplifier circuit with gain between 0 and 96 was found in the December 1983 issue of Radio...