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Audio Switch Notes - Neat Circuits
https://www.neatcircuits.com/audiosw/index.html
There are two types of audio switches that will be shown. switch. A simple J-FET switch is easy to accomplish. required. The more common N-channel will not give the same results, especially A common device is the 2N5462 or the J176 or …
FET as a Switch | Working of MOSFET or JFET as a Switch
https://www.electronicshub.org/fet-as-a-switch/
FET as a Switch (JFET) From the above discussion, it is clear that the FET can be used as a switch by operating it in two regions, they are cutoff and saturation region. When the V GS is zero the FET operates in saturation region and maximum current flows through it. Hence it is like a fully switched ON condition.
Simple FET Circuits and Projects - Homemade Circuit …
https://www.homemade-circuits.com/fet-circuits/
Audio power through the FET drain builds up a voltage around R2, and is connected to the full-wave rectifiers by C3. Current from this bridge rectifier configuration flows by means of the meter, to indicate an equivalent reading that is determined by the power of the fed audio signal. ... Switch S1 is used for selecting various measuring ranges ...
Simple Audio Circuits - Making Easy Circuits
https://makingcircuits.com/blog/audio-amplifier-circuits-using-fet/
Through the usage of 2N4868 FETs (Q1 and Q2), the circuit provides maximum voltage gain of 10 per half. This relates to a maximum signal input of 15 mV rms for an output of 1.5 V rms before output-peak clipping. The current drain is 350 µA at 15 V DC. All resistors are 0.5 watts and electrolytic capacitor C3 is rated at 25 dcwv.
switches - MOSFETs or BJTs for using as switch for audio ...
https://electronics.stackexchange.com/questions/66332/mosfets-or-bjts-for-using-as-switch-for-audio-signals
The MOSFET approach could be made to work (as Dave Tweed) suggests. But, there is a catch. Let's say that your audio signal can vary from +2 to -2 volts and Vgs(th) Max of your MOSFET is 4 volts. Then the gate voltage that you put on your MOSFETs must switch to +6 and -6v.
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