This circuit from a June 1957 Radio Electgronics is for oscilloscopes of the time with a maximum frequency of a few megahertz. The circuit is battery powered.
This remote listening device was found in documentation from the 50's. The transistors used are...
This circuit includes an AD converter for interfacing with a microprocessor and can be used as a...
The figure shows an anti-bounce circuit among many that can be found on our website and in our...