This circuit is powered by a voltage of 4.5 V, being common in radios of the 60's. The circuit is from Mullard's transistors reference manual.
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...