This RF amplifier step has a dynamic range of 140 dB and can amplify signals from 0.5 to 40 MHz. FET is old, but modern equivalents can be used.
Using the well-known SAA1027, this circuit serves as interface for PC. No English documentation was found...
This speed control for small DC motors can operate from 6 to 12 V sources. The motors can drain...
We found this transformer-isolated control circuit in a June 1995 Electronics Now. The triac must...