This 1965 circuit uses a Philips 4068 tube to measure extremely small charges. The circuit has as indicator a micro ammeter and the transistors are of the time.
CL88020 is a Next-Generation Device Designed for Offline Lighting CHANDLER, Ariz., July 10, 2017 — A...
Among the applications for this circuit, we can mention the production of pulses of high intensity and...
This circuit was suggested by a Radio Shack publication from the 1980s. The purpose of this...