This transmitter for the 40 meter or 7 MHz band was found in a magazine 73 for radio amateurs of the 90s. The circuit has a power of ½ W.
This is the power supply for the amplifier shown in CB18507E. Power transistors must be mounted on heat...
This oscillator was found in a Raytheon documentation from the 60's. The phone must be high...
This window comparator configuration is from a 1980 publication. It is a conventional circuit that...