This circuit was found in a 90s RF Design. It is an oscillator that can reach 800 MHz, with the frequency controlled by an input voltage.
This traditional configuration of bandpass or bandpass filter with operational 741 was found in a...
This circuit was found in a publication from the 50's. The circuit uses germanium transistors of...
This very high voltage (VHT)generator was found in a 1995 documentation. The transistors must be...