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.
The short-wired circuit is suggested by National Semiconductor in documentation on the LM3909. The power...
This ultra-low noise amplifier and simple power supply was found in Analog Devices documentation from the...
This touch switch is from a 1978 publication. The circuit should not be powered by a...