This alarm siren was found in volume 5 of the 1995 Encyclopedia of Electronic Circuits. The circuit powers a buzzer.
This circuit was found in a documentation from the 50's. The transistor is made of germanium and...
This circuit is from a Japanese magazine of 1973. The circuit is designed to withdraw the power...
The difference in the circuit shown in the figure, in relation to the CIR8144r, is that it uses a...