This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is powered by 12 V and the power gain is 8.9 dB.
The figure shows how to use an oscilloscope for diode test. The circuit presents the...
We found this circuit in the October 1991 issue of Radio Electronics magazine. The circuit uses...
This circuit was obtained from an English magazine from 1977. It is a toy musical instrument that...