This circuit provides a high intensity pulsating signal to a speaker. The circuit is from an American 90's documentation. The power supply is 12 V.
This circuit was found in a 1965 Electronic Design. Transistor Q2 must be load dependent. The circuit...
This 8-channel converter was found in a 1970s American documentation. The integrated circuits used are...
This rectangular signal generator was found in an Electronics World of 1966. The transistors are...