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Muting Circuits For Audio
https://www.sound-au.com/articles/muting.html#:~:text=Junction%20FETs%20%28JFETs%29%20can%20also%20be%20used%2C%20and,relay%2C%20JFETs%20have%20significant%20resistance%20when%20turned%20on.
FET Audio Mute | Electronics Forums
https://www.electronicspoint.com/forums/threads/fet-audio-mute.99726/
Essentially audio signal passes through a enhanced n-mosfet connect to source. The drain goes into a load which is what ever load the would have been connected to it in the first place. The base of the fet is connected to -5V. The gate is connected to a STDP switch that selects -5V or +5V for turning on and off the fet.
Muting Circuits For Audio
https://www.sound-au.com/articles/muting.html
Junction FETs (JFETs) can also be used, and like the relay they mute the signal by default. To un-mute the audio, a negative voltage is applied to the gate, turning off the JFET and removing the 'short' it creates. Unlike a relay, JFETs have significant resistance when turned on.
Muting Transistor Attenuator Circuits and the 2SC2878 ...
https://www.electroschematics.com/muting-transistor-attenuator-circuits-2sc2878/
Obviously, the function of muting circuits is to mute (kill) the audio signal. This can be done in a number of ways including switches, relay contacts, junction FETs, analog switches and bipolar muting transistors. Switch and relay contacts can be noisy and intermittent due to contact bounce.
Audio soft mute using optically isolated MOSFET
https://electronics.stackexchange.com/questions/325777/audio-soft-mute-using-optically-isolated-mosfet
Audio soft mute using optically isolated MOSFET. Ask Question Asked 4 years, 5 months ago. Active 1 year, 10 months ago. Viewed 2k times ... I had to use the same signal that feeds the relay's coil when that triggers I'm creating a pulse which should open the MOSFET, short the path to ground and keep it that was for about 0.2ms which is enough ...
JFET Audio Mute Switch
http://www.redwaveradio.com/5_5ee107db307c7a37_1.htm
JFET Audio Mute Switch. in the audio chain of a simple superhet xcvr. I'm using the T/R. switch from the SW30+ qrp rig. The final PA in the transmitter chain. is a 74HC240 which is putting out about 1/2 watt. On transmit the. slightly) and is ear splitting loud. I …
Muting Transistor Attenuator Circuits and the 2SC2878
https://www.diyaudio.com/community/attachments/muting-transistor-attenuator-circuits-and-the-2sc2878-pdf.1017514/
Obviously, the function of muting circuits is to mute (kill) the audio signal. This can be done in a number of ways including switches, relay contacts, junction FETs, analog switches and bipolar muting transistors. Switch and relay contacts can be noisy and intermittent due to contact bounce. Furthermore, properly
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