Found in a 90s R-E Experimenters Handbook, this circuit amplifies signals from 100 Hz to 3 MHz. The circuit has a gain of approximately 30 dB. Bipolar transistors are general-purpose types.
We found this circuit in an English publication of 1976. It can be easily assembled by changing the...
This circuit was found in an old Radio Electronics, but can still be assembled as the components are...
We found this circuit with duty cycle adjustment in the May 1988 Radio Electronics magazine. The...