This circuit was found in a documentation from 1948. There are 5 valves with push-pull output. The source uses a transformer, and the indicated application is with turntables.
This operational amplifier configuration has gain controlled by an external voltage applied to a...
This circuit is from a 1978 publication, being connected to the contact breaker of cars that still...
January 2017 - STMicroelectronics' new TN4015H SCRs with 40 A currents and high temperature...