Although it uses a dual-channel FET, which is hard to find today, this circuit was released in a Radio Electronics issue in April 1986. It serves as a signal booster for a wide range of frequencies.
The gain of this alternating voltage amplifier is 100 times, depending on the 1M-ohm resistor, which...
This simple field strength meter is from a transistor book from the 60's. The transistor is made...
We found this circuit in an 80's Electronic Design. It makes use of couplers of the time that can...