The coils of this circuit will determine the transmission frequency of this device. The circuit is from the 1960 Mullard transistor reference manual and makes use of germanium transistors.
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...