This circuit was found in a 90s Radio Electronics. It is intended to amplify the sound channel of analog televisions of the time. The integrated circuit used is uncommon today.
This circuit for 40 V systems was found in a Linear Technology application manual. The circuit...
This circuit was obtained in a 90s Popular Electronics. In the table the values of the components...
This transmitter for the 7 MHz range, as we can assume by the number of turns of the coil, since the...