Found in a 90s Hands On Electronics, this small preamp finds applications like microphones and other sources. Its gain is 3 dB with a response of 120 to 20 000 Hz.
This circuit shows on the screen of an oscilloscope two signals alternately at a frequency that depends...
This circuit is intended for SSB transmission by generating two sideband signals with the carrier...
The integrated circuit used in this circuit from a 1987 documentation is no longer common today....