This circuit was found in an ancient American documentation. With it is possible to double the frequency of a transmitter For the range of 6 meters obtaining 8 W. The circuit makes use of varicap.
This circuit uses a complementary unijunction transistor that is not the common type. The...
This high power dimmer uses a unijunction transistor to trigger the triac. The triac is choosen...
This microtransmitter operates at a frequency between 3.5 MHz and 10 MHz determined by the...