This circuit was found ina 90s Popular Electronics. It is intended for switching analog video signals, indicated components that are still common today.
This circuit generates circles on the screen of an oscilloscope. The circuit is from old...
To excite a higher power load, such as a 40mA lamp, we have the circuit in the figure. For this...
This circuit, from a 1998 documentation, allows to obtain more power for the radios and amplifiers of...