This transistor tester with different gain ranges was found in documentation from the 1980s. The circuit can still be implemented with more modern components and used with general purpose transistors.
This circuit was found in the November 1992 issue of Radio Electronics magazine. The circuit has...
This 70 kHz oscillator is used to erase tapes in pre-recording. The circuit is from 1968 General...
This circuit is from a 1977 National Semiconductor manual. The circuit directly indicates the...