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Audio Switch Notes - Neat Circuits
https://www.neatcircuits.com/audiosw/index.html
A simple J-FET switch is easy to accomplish. The use of a P-channel J-FET is required. The more common N-channel will not give the same results, especially fading. A common device is the 2N5462 or the J176 or J177 available from Jameco (part number 140142CF $.59ea or 211414CF $.29ea at 2005 prices). The circuit below is an example of a simple ...
Simple FET Circuits and Projects - Homemade Circuit …
https://www.homemade-circuits.com/fet-circuits/
The 2N3823 FET delivers the large transconductance (6500 /umho) necessary for optimum working of the FET phase-shift oscillator circuit. The circuit pulls around 0.15 mA through the 18-volt DC source, and the open-circuit AF output is around 6.5 volts rms. All resistors used in the circuit are or1/4-watt 5% rated.
Simple Audio Circuits - Making Easy Circuits
https://makingcircuits.com/blog/audio-amplifier-circuits-using-fet/
Video Amplifier. From Figure 2.15, you can see the circuit of typical video amplifier utilising a sole 2N3819 FET. The circuit delivers a voltage gain of 5: the maximum signal input before output-peak clipping, at 1 MΩ load, is 0.6 V rms for 3 V rms output. For increasing gain, you may cascade the stages.
FET as a Switch | Working of MOSFET or JFET as a Switch
https://www.electronicshub.org/fet-as-a-switch/
N-channel JFET to Switch LED Circuit BACK TO TOP P Channel JFET as a Switch. Up to now we have discussed about N channel JFET as a switch. Another type of JFET is a P channel JFET and the operation of this FET is also similar to N-type, but only the difference is the positive voltage at the gate terminal.
AN-32 FET Circuit Applications - Texas Instruments
https://www.ti.com/lit/an/snoa620/snoa620.pdf
FET Circuit Applications *Polycarbonate dielectric TL/H/6791–1 Sample and Hold With Offset Adjustment The 2N4339 JFET was selected because of its low lGSS (k100 pA), very-low lD(OFF) (k50 pA) and low pinchoff volt-age. Leakages of this level put the burden of circuit perform-ance on clean, solder-resin free, low leakage circuit layout. TL/H ...
How to Build an N-Channel JFET Switch Circuit
http://www.learningaboutelectronics.com/Articles/N-channel-JFET-switch-circuit.php
In this circuit, we power on an LED. We use a 270Ω resistor to act as a current-limiting resistor to the LED. You can really use any other output device you want such as a buzzer. It doesn't have to be an LED. N-Channel JFET Switch Circuit Schematic. The schematic diagram of the N-Channel JFET Switch Circuit we will build is shown below.
JFET audio switch question | All About Circuits
https://forum.allaboutcircuits.com/threads/jfet-audio-switch-question.28242/
37. Oct 1, 2009. #1. I would like to use a JFET, like a J113, as an audio switch that is in series with the signal. The audio input signal is tied to the Drain, and the audio output signal is tied to Source. The audio signal fluctuates above and below 0V. The Gate is controlled by a control voltage, where 0V= switch is on, and -5V= switch is off.
JFET Audio Switch Circuit - 2n5457 - YouTube
https://www.youtube.com/watch?v=UHr5t8oiy04
Taking a look at the common JFET circuits used in guitar pedals to switch effects in and out of the audio path. A test circuit was breadboarded to investiga...
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
\$\begingroup\$ This circuit will create a very loud pop every time the audio is switched on/off. If the audio is enabled, then the DC level at the collector of the NPN is +6v. If "muted" then the collector voltage will be 0v. When you switch between enabled and muted you will have a 6-ish volt spike on the output.
MOSFET as a Switch - Using Power MOSFET Switching
https://www.electronics-tutorials.ws/transistor/tran_7.html
An example of using the MOSFET as a switch. In this circuit arrangement an Enhancement-mode N-channel MOSFET is being used to switch a simple lamp “ON” and “OFF” (could also be an LED). The gate input voltage VGS is taken to an appropriate positive voltage level to turn the device and therefore the lamp load either “ON”, ( VGS = +ve ...
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