This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is based on the 566 PLL and generates signals up to about 200 kHz.
This current source was obtained from an 80's operating manual. The circuit can be applied to modern...
This circuit for UHF between 800 and 1 000 MHz was found in an American documentation from the...
This circuit is from an American publication of 1977. The tunnel diode admits equivalents and the...