In the figure we have a stereo decoder from the 70's with pilot lamp for signal indication. The circuit employs a component of the time, which is uncommon today.
This circuit was found in Electronics Now magazine and can be applied to any JFET. The circuit has high...
This circuit is from a 1977 National Semiconductor integrated circuits manual. The circuit admits...
This is a commercial radio circuit for 1967 AM. It was found in Japanese documentation. The...