The circuit shown is for testing both signal diodes (low current) and rectifiers (high current). The circuit is from a 2000 Poptronics, and the transformer has a secondary winding of 100 to 300 mA.
This circuit was obtained in European documentation from the 1980s. Transistors support...
This timer, like the previous circuits, uses a currently uncommon integrated circuit. The time is...
This Salen-Key filter can use any operational amplifier and other frequencies can be obtained by...