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.

Pre-Emphasis on 1500 Hz (CB13685E)
This circuit reinforces signals in a frequency range between 1500 and 2000 Hz for use in...
Wind Detector (CB5155E)
When a small air current reaches the piezoelectric sensor, a small audio signal is generated and...
Signal Injector (CB10325E)
This circuit is from a Poptronics, American magazine from August 2000. The circuit can be...