This circuit is from the 1983 Intersil Databook. The circuit has an A / D converter for display of 4 and a half digits being powered by a voltage of 9 V.
We found this circuit in a Electronics Hobbyst from 1977. The circuit is indicated to adapt the...
June 2017 - These new AVX capacitors are suitable for filter applications, considerably reducing...
This powerful pushbutton uses a power MOSFET. We found it in a Popular Electronics magazine from...