This transmitter for the 3.5 and 7 MHz ham radio was found in a 1950s Japan publication. No information was given on the coils and the power supply.
This circuit was found in an old publicatio n from the year 1958. The circuit controls an external load by...
The focused circuit was found in the National Semiconductor's Linear Applications Handbook of...
If there is an indispensable household appliance in our kitchen these days it is the microwave...