This amplifier was found in a 1957 Rayrtheon documentation. The circuit can be fitted with a BC558 transistor. Driver and output transformers can be obtained from unused transistor radios.
We found this circuit in the Texas Instruments opto-electronics manual. The button resets and the...
This circuit is from a 1992 documentation, but the components used can still be easily assembled. The...
This interesting amplifier for frame antenna for the medium wave range was found in a Popular...