This circuit was found in an American documentation from the 80's. The components are from that time. It provides a variable output of 18 to 30 V with a current of 200 mA.
This circuit is from the 1983 Intersil Databook. The ADC0801 and 0804 are low-cost AD converters. They...
This circuit uses only two transistors, the first being low noise, being indicated for dynamic...
This circuit divides the frequency of a signal by two. The circuit is found in the May 1977 issue...