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 the February 1983 issue of Radio Electronics magazine. The 4-digit...
We found this circuit in an old American documentation. It is an electronic rheostat with a...
With this circuit it is possible to trace the characteristic curve of a component using an...