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Simple FET Circuits and Projects - Homemade Circuit Projects
https://www.homemade-circuits.com/fet-circuits/#:~:text=Field%20effect%20transistors%20or%20FETs%20can%20be%20easily,supply%20voltage%2C%20and%20features%20a%20low%20battery%20drain.
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 …
Simple Audio Circuits - Making Easy Circuits
https://makingcircuits.com/blog/audio-amplifier-circuits-using-fet/
Once the control voltage is positive with respect to ground, a p-channel FET (like the 2N2608) must be used on top of adjusting the values of R3 and R4 as needed and reversing capacitor C2. Simple FET DC Amplifier. Figure …
Chapter 9: FET Amplifiers And Switching Circuits
https://staff-old.najah.edu/sites/default/files/Chapter%209.pdf
Chapter 9: FET Amplifiers And Switching Circuits 9-1: The Common Source Amplifier (CS Amplifier) FET has an important advantage compared to the BJT due to the FET’s extremely high input impedance. Disadvantages, however, include higher distortion and lower gain. The common-source (CS) amplifier
Simple FET Circuits and Projects - Homemade Circuit …
https://www.homemade-circuits.com/fet-circuits/
This FET circuit is designed to provide a large boost (40 dB) to any modest AF signal, and could be applied both individually or introduced as a stage in equipment requiring this capability. The input impedance of the 2-stage FET amplifier circuit is around 1 megohm, determined by the input resistor value R1.
FET as a Switch | Working of MOSFET or JFET as a Switch
https://www.electronicshub.org/fet-as-a-switch/
In this circuit FET acts as a series switch. It acts as a closed switch if the control voltage is zero and open switch if control voltage is negative. When the FET is ON, the input signal will appear at the output and when it is OFF the output is zero.
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.
AN-32 FET Circuit Applications - Texas Instruments
https://www.ti.com/lit/an/snoa620/snoa620.pdf
This analog switch uses the 2N4860 JFET for its 25 ohm rON and low leakage. The LM102 serves as a voltage buffer. This circuit can be adapted to a dual trace oscilloscope chopper. The DM7800 monolithic I.C. provides adequate switch drive controlled DTL-TTL logic levels. TL/H/6791–28 20 MHz OSCILLATOR VALUES C1 j 700 pF L1 e 1.3 mH
Muting Circuits For Audio
https://www.sound-au.com/articles/muting.html
The on resistance of the FET is 200Ω with a forward current of 16mA through the LED. Analog Devices used to make ICs called the SSM2402 and SSM2412 that included a three JFET 'T' attenuator and a complete controller circuit …
JFET audio switch question | All About Circuits
https://forum.allaboutcircuits.com/threads/jfet-audio-switch-question.28242/
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. I have seen circuits where a diode is placed between the control voltage and the Gate.
MOSFET as a Switch - Using Power MOSFET Switching
https://www.electronics-tutorials.ws/transistor/tran_7.html
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 V GS is taken to an appropriate positive voltage level to turn the device and therefore the lamp load either “ON”, ( V GS = +ve ) or at a zero voltage level that turns the device “OFF”, ( V GS = 0V ).
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