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 circuit also makes use of a field effect transistor (JFET) which can be the BF245 and has an...
We can use this circuit to connect low impedance microphones and even small speakers used as a...
When S1 is in 1, the circuit operates with of half the total power applied to the load. When in...