This amplifier stage without an output transformer was found in Radio Electronics magazine from October 1963. The supply is 12 V, and the output is 8 or 16 ohms.
Being able to operate with frequencies up to 100 kHz, this circuit was found in a 90’s...
The integrated circuit used in this filter is not very common today, but the reader can use...
This circuit doubles the frequency of signals from 10 to 50 MHz. We found it in a 1969 Electronic...