This transistorized stage has a high gain, being adjusted by VR1. The circuit can be used as an excellent audio preamp. We found this circuit in a 1996 English publication.
Using an RCA CA3018 as a base, this circuit has a sensitivity of 2 Mohms per volt. The circuit is from a...
This oscillator found in the April 1984 issue of Radio Electronics magazine is designed for bird...
We found this circuit in a 1977 National Semiconductor technical documentation. The circuit has 4...