Found in a 1968 Motorola documentation, this circuit operates at 1 kHz and can deliver 20 V from 12 V. Transistors support modern equivalents.
This circuit was found the Optoelectronics Sourcebook by Texas Instruments. Any phototransistor...
This traditional photodiode amplifier configuration uses an operational one that is no longer...
Figure bellow shows how one of the two separated counters found inside the 4518 is used as a...