This circuit triggers a Sonalarme when the LED used as a sensor receives light. The circuit was found in an old documentation, but the components used are all current.
This continuity test was found in a 90s Electronic Engineering. Transistors are types of general...
The shunt type regulators are connected in parallel with the load, deflecting the current to...
This circuit protects the speakers in case the amplifiers have problems. With a continuous voltage...