This very high input impedance JFET circuit was found in the 1995 Encyclopedia of Electronic Circuits Volume 5. The JFET is a general-purpose transistor as is the output transistor.
This circuit switches a load in 0.013 ms after closing the switch and after the start of each...
This circuit can be powered by 2 or 3 small batteries. The resistor can have values between 220...
The purpose of this circuit is to test power supplies functioning as a variable load that can...