This circuit was found in an Elektor from the 90s. The circuit uses common components even today, requiring a symmetrical power supply.
This circuit was found in a 90s Electronic Design. The circuit directly controls a triac that is...
Found in a 90’s 303 Circuits, this circuit uses components that are still common and has a common...
This circuit uses two transistors, the low noise BC549. Its quality is very good and it has a...