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voltage - Switching a transistor with audio output ...
https://electronics.stackexchange.com/questions/116151/switching-a-transistor-with-audio-output
Insert a 100 ohm or so resistor in series with the LED, to limit the current if you get the transistor fully turned on. Disconnect the audio signal for now. Instead of your BE and BC resistors, use a pair of resistors, one from B to +5, and the other from B to ground. The ratio should bias the base so that the LED is just dark.
Transistor as a Switch - Using Transistor Switching
https://www.electronics-tutorials.ws/transistor/tran_4.html
Then to summarise when using a Transistor as a Switch the following conditions apply: Transistor switches can be used to switch and control lamps, relays or even motors. When using the bipolar transistor as a switch they must be either “fully-OFF” or …
NTE Electronics PNP Audio Amplifier Switch Transistor 5 ...
https://www.microcenter.com/product/392687/nte-electronics-pnp-audio-amplifier-switch-transistor-5-pack
NTE Electronics NTE Electronics PNP Audio Amplifier Switch Transistor 5-Pack. NTE Electronics PNP Audio Amplifier Switch Transistor 5-Pack. BUYING OPTIONS. Option #1 Usually ships in 5-7 business days. Option #2 - Most Popular!
Transistors for an Audio Switch - Page 1 - EEVblog
https://www.eevblog.com/forum/beginners/transistors-for-an-audio-switch/
Re: Transistors for an Audio Switch « Reply #16 on: May 18, 2017, 10:57:40 am » There are analogue switches that are suitable for switching headphone level …
NTE123AP NPN audio transistor - WholeSaleElectronics
https://www.weisd.com/products/3761-nte123ap-npn-audio-transistor
Product Details. NTE123AP NPN audio transistor. NTE123AP Silicon NPN Transistor Audio Amplifier. Switch (Compl to NTE159). Data Sheet.
Audio Switch Notes - Neat Circuits
https://www.neatcircuits.com/audiosw/index.html
There are two types of audio switches that will be shown. 1) J-FET 2) CMOS switch. 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.
Using a Transistor as a Switch - BISON ACADEMY
http://bisonacademy.com/ECE320/Lectures/12%20Transistor%20Switch.pdf
Using a Transistor as a Switch Background: Transistors can be used as a buffer between a microcontroller and another device. Microcontrollers typically output +5V and up to +20mA. With a transistor, this 0V/5V signal can turn on and off: A 200mW LED which draws 100mA @ 1.9V An 8-Ohm speaker which draws 625mA @ 5V. A motor which draws 2A at 24V
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 only component that you can use as a voltage-controlled switch is a MOSFET. A BJT (bipolar junction transistor) is a current-controlled switch. The collector–emitter is controlled by the base–emitter current. If you want a voltage-controlled switch, you should use a FET/MOSFET.
Transistor as a switch off of audio signal | All About ...
https://forum.allaboutcircuits.com/threads/transistor-as-a-switch-off-of-audio-signal.107260/
First of all, I measured the audio output with my scope at around .5 Vpp and that was with the volume all the way up which is still a bit low to turn on a transistor reliably. Second, I am going to want to apply a passive low pass filter using a simple RC so i get just the bass or the beat but this likely will cut my voltage more.
Working of Transistor as a Switch - NPN and PNP …
https://www.electronicshub.org/transistor-as-a-switch/
In this Transistor tutorial, we will learn about the working of a Transistor as a Switch. Switching and Amplification are the two areas of applications of Transistors and Transistor as a Switch is the basis for many digital circuits.
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