This circuit was found in a 1980s American documentation. The data circuit has a low speed, according to the components used. Transistors support modern equivalents.
This circuit was found in Linear Circuits Applications of Texas Instruments, originally using the...
This circuit, from a 1988 publication, consists of a timer that activates a relay at the end of a...
This configuration was found in the Texas Instruments optoelectronics manual. PNP transistors...