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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 …
Simple FET Circuits and Projects - Homemade Circuit …
https://www.homemade-circuits.com/fet-circuits/
The FET circuit will show a quick start tendency for crystals that are beter suited for the tuning. The FET untuned oscillator circuit consumes roughly …
Simple Audio Circuits - Making Easy Circuits
https://makingcircuits.com/blog/audio-amplifier-circuits-using-fet/
An amplifier that can be configured for peak output at a required audio frequency is vital in bridge balancing, signal selection, telemetering, cw signal peaking, selective signalling and electronic control. In Figure 2.12A, You …
Chapter 9: FET Amplifiers And Switching Circuits
https://staff-old.najah.edu/sites/default/files/Chapter%209.pdf
FET AC Model An ideal ac circuit model with ac drain resistance Rd can be represented as shown. The voltage gain for the circuit shown is gs ds in out v V V V V A = = but and From definition of transconductance Ex: for a JFET with gm = 4mS and Rd = 1.5kΩ Æideal voltage gain is Av= gmRd = (4mS)(1.5k Ω) = 6 9-1: The Common Source Amplifier
FET as a Switch | Working of MOSFET or JFET as a Switch
https://www.electronicshub.org/fet-as-a-switch/
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 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. The anode of the diode is tied to the Gate and the cathode is tied to the control voltage.
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.
MOSFET as a Switch - Using Power MOSFET Switching
https://www.electronics-tutorials.ws/transistor/tran_7.html
By applying a suitable drive voltage to the gate of an FET, the resistance of the drain-source channel, R DS(on) can be varied from an “OFF-resistance” of many hundreds of kΩ, effectively an open circuit, to an “ON-resistance” of less than 1Ω, effectively acting as a short circuit. When using the MOSFET as a switch we can drive the MOSFET to turn “ON” faster or slower, or pass high or …
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