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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
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. The reason for this is when your switch is ON, you do not want the reverse body diode of the MOSFET to be conducting any current.
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https://www.amazon.com/mosfet-switch/s?k=mosfet+switch
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MOSFET as a Switch - Using Power MOSFET Switching
https://www.electronics-tutorials.ws/transistor/tran_7.html
MOSFET Switches - Learn About Electronics
https://learnabout-electronics.org/Semiconductors/fet_06a.php
The MOSFET switch circuit load in this case is a 12V 36Watt automotive headlamp bulb and the input to the MOSFET switch will be a pulse width modulated, logic level signal. This may be supplied by any 5V compatible logic circuit producing a PWM signal at a frequency in the high audio frequency range.
Using MOSFETs As General Switches – Electronic …
https://electronic-products-design.com/geek-area/electronics/mosfets/using-mosfets-as-general-switches
To Switch +V With A N-Channel MOSFET Use a N-Channel MOSFET with Drain connected to +V and the load connected to Source. There’s a catch with this arrangement though – the mosfet switches on based on the Vgs threshold being reached and the source voltage in this arrangement changes between off (0V) and on (Vin).
How to use MOSFET as a switch - Circuits DIY
https://circuits-diy.com/how-to-use-mosfet-as-a-switch/
To use a MOSFET as a switch, you have to make its gate voltage (Vgs) higher than the source voltage. If you connect the gate to the source or both the voltages are equal (Vgs=0) then the MOSFET will turn off. In this circuit, we have connected the drain terminal to VCC by using a resistor and LED. The source terminal is connected to the ground.
The MOSFET as an Amp and Switch - ITTC
http://www.ittc.ku.edu/~jstiles/312/handouts/The%20MOSFET%20as%20an%20Amp%20and%20Switch.pdf
11/1/2004 The MOSFET as an Amp and Switch.doc 8/14 Jim Stiles The Univ. of Kansas Dept. of EECS This circuit provides a simple example of one of the primary applications of MOSFET devices—digital circuit design. We can use MOSFETs to make digital devices such as logic gates (AND, OR, NOR, etc.), flip-flops, and digital memory.
Mosfet Switch: How to use Mosfet as a switch | Elex-Focus
https://elexfocus.com/mosfet-switch-how-to-use-mosfet-as-a-switch/
ON state- Mosfet as a switch When we push the Push button, the 12v supply gets connected to the gate terminal of the Mosfet. Therefore, the Mosfet gets ‘ON’ and it starts conducting. Hence the current starts flowing which makes the LED glow. In simple explanation, the LED gets connected to ground as Mosfet turns ON and it starts glowing.
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 J177 available from Jameco(part number 140142CF $.59ea or 211414CF $.29ea at 2005 prices).
How to Build an N-Channel MOSFET Switch Circuit
http://www.learningaboutelectronics.com/Articles/N-channel-MOSFET-switch-circuit.php
MOSFETs are voltage-controlled devices. This means that a voltage applied to the gate controls whether the transistor switches on or off. When an N-channel (enhancement-type) MOSFET has no voltage at its gate, it is OFF and no current conducts across from drain to source; thus, the load connected to the MOSFET will not turn on.
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