This circuit is from an old Japanese publication of 1962. The circuit uses two batteries, one for the filaments of the tubes and the other one of high voltage for the plate circuits.
May 2016 - Mouser Electronics has in stock the new Grayhill 5-inch touch displays type 3D50. The...
This circuit is from the time when cars used contact breakers. This 80's version measures the dwell...
STMicroelectronics MP23AB02B MEMS Audio Sensor is a compact, low-power microphone built with a...