This 3-transistor buzzer or buzzer is a classic type found in the July 1998 issue of Electronics Now magazine. The power rating depends on the output transistor.
We found this circuit in a technical documentation from the 70s. It can be implemented with more...
This simple MW radio circuit with two transistors was obtained in an Argentine publication from...
The LM12 integrated circuit can provide a maximum current of 4 A with a symmetrical supply of 40...