This excellent tube preamplifier was found in Radio Electronics magazine from July 1958. The power supply was not included. The circuit has several inputs.
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...