The circuit presented was suggested by a Texas Instruments optoelectronics manual. The voltage depends on the load and can be changed. The transistor can be a BC548 and the SCR any of the TIC series. The phototransistor admits equivalent.
The circuit presented was suggested by a Texas Instruments optoelectronics manual. The voltage depends on the load and can be changed. The transistor can be a BC548 and the SCR any of the TIC series. The phototransistor admits equivalent.