Found in American documentation from the 90's, this JFET stage has an input impedance of 500 M ohms. Bipolar transistors are general purpose types and the FET supports an equivalent.
July 2017 - Texas Instruments' new 3 A bq25601 single cell battery charger can be found on Mouser...
The presented circuit is based on an operational transconductance amplifier (OTA) having been...
This circuit generates high voltage for the firing of a xenon lamp. We found this configuration in a 1994...