This space mark demodulator for FSK signals was found in an American telecommunication documentation from the 1980s. The circuit operates with 2025 Hz and 225 Hz mark space signals.
You can change the output voltage of a fixed 3-terminal regulator using a zener diode. The voltage of...
We found this circuit in an old documentation from the 70s, but it can be assembled with more...
The SCR MCR1000 MOS is a rare component today. It is an SCR with MOS field trip, requiring a...