CA3080 Amplifier (CB25131E)

This amplifier with an OTA has a gain of 40 dB. The power supply must be symmetrical. Found in Radio Electronics, May 1988.

5 to 15 V Variable Power Supply using the 7805 (CB10291E)
This circuit was obtained in a 1989 English magazine. Despite using a fixed 5 V regulator, it can...
Monostable Frequency Divider 555 (CB19550E)
With the feedback of the output circuit, the monostable acts as a frequency divider, that is, it...
Video driver with impedance matching (CB20915E)
In this circuit of an old American documentation, the input impedance is the same as the output...