Found in American documentation from the 90s, this circuit uses components that are still common today. The 15 V power supply must be symmetrical.
This circuit is suitable for applications in medical, research and industrial equipment. The...
This circuit, found in a publication of the year 1968, uses a transformer to drive two power...
This 100-second timer was found in a 2000 Poptronics. The magazine no longer exists, but the...