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.
This dual flasher for high brightness LEDs was found in an American documentation from the 90's....
Found in a 1969 British publication, this circuit uses a regenerative switch with two transistors to...
This is the basic operational amplifier configuration for gain 10. R2 can be changed to other...