This circuit can function as an output shield for microcontrollers, being compatible with TTL logic. The frequency is adjusted in the trimpot. TTL power is 5 V.
This variable gain circuit for analog video signals was found in a 90s Linear Technology...
In the figure we show how to connect a power MOSFET to the output of a CMOS function to control a power...
This receiver using a FET appeared in a November 1957 Radio Electronics magazine. It is one of the...