This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is powered by 12 V and the power gain is 8.9 dB.
In the figure we have the way to connect an LED on the output of a power source to indicate the...
The UM3562 integrated circuit is a dedicated circuit found in many toys because it generates three types...
This amplifier for public address was found in English documentation from 1967. The transistors are from...