This low frequency divider uses unijunction transistors. The bipolar transistor can be a BC548 and the zener diode Z4XL can be a 12 V zener. The circuit was found in a 1967 publication.
This power source can supply currents in the range of 100 mA to 1 A, depending on the transformer and the...
This circuit for receiving or transmitting low power was found in old American documentation. It is...
This circuit is suggested by the National semiconductor and is based on an increased power...