The capacitor used in this circuit can have values between 5 and 30 uF. The circuit is of old documentation for radio amateurs. Observe the special source used in the supply.
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...