This circuit generates a 1296 MHz signal from 100 or 1,000 kHz crystals. We found it in an American documentation for radio amateurs.
This small locator transmitter was found in old Radio Shack documentation. The transistor could be a...
This circuit causes the light of a bicolor LED to change when it is turned on. The time of...
This circuit was found in a 1968s European documentation. It is a current regulator using...