This circuit has an automatic dynamic gain control in a range of 6 dB to 40 dB. We found it in documentation from the 90s. The bipolar transistor is a general purpose type.
This circuit was suggested by Sprague Electric in an 80's documentation. The circuit uses a...
This micro AM radio will tune strong stations in the frequency range between 530 and 1,600 kHz....
The circuit shown in the figure generates a signal between 50 and 100 MHz and can therefore be...