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.
This type of circuit is interleaved between a microphone and a transmitter in order to improve the...
We found this project in an old publication from 1983. The circuit uses 4 switches of 1 pole x 8...
One of the first transistor amplifiers with transformerless output but using a 45-ohm speaker. This...