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.
September 2017 - Mouser Electronics is now offering Microchip MTD6508 engine drivers. These...
This small audio amplifier was found in an American publication in 1975, The integrated circuit used...
This circuit was found in a 90’s EDN. The components used are still common and the sensors can have...