This circuit uses a general-purpose transistor and has waveform adjustment. We found it in an American documentation from the 90s.
The circuit presented is a Japanese commercial radio from the 1960s. With a 4.5 V supply, it is a...
This is the receiver for the earlier system published in the August 1988 Radio Electronics...
This circuit generates a 1 MHz signal for general equipment calibration. The circuit is from an...