This modulator amplifier for transmitters was found in a 1947 American book. The circuit uses an output with 4 tubes connected in parallel and in push-pull.
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...