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Use of Transistor as switch - QS Study
https://qsstudy.com/use-of-transistor-as-switch/#:~:text=It%20converts%20audio%20waves%20into%20electronic%20waves%20and,when%20it%20is%20in%20cutoff%20and%20saturation%20regions.
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
Audio Activated Delay Switch Using Transistors - DIY …
https://circuits-diy.com/audio-activated-delay-switch-using-transistors-diy-project/
Audio Activated Delay Switch Using Transistors – DIY Project. Audio activated delay switch is a circuit that can activate a relay switch for a specific time period. For example, when we are listening to an FM radio station there’s a sudden increase in volume when any advertisement or song plays.
Transistor as a Switch - Using Transistor Switching
https://www.electronics-tutorials.ws/transistor/tran_4.html
Using transistors as switches…
http://dmorris.net/projects/tutorials/transistor.switches.pdf
Using transistors as switches by Dan Morris Intro A key aspect of proper hacking is the use of transistors for switching things on and off. A typical example is using a computer’s parallel port to turn some external device on. I used to do this all the time, but I’m not an electrical engineer, and I don’t claim to really remember anything I
Transistor as a switch off of audio signal | All About ...
https://forum.allaboutcircuits.com/threads/transistor-as-a-switch-off-of-audio-signal.107260/
You can add a common emitter transistor amplifier stage to jack the input wave up to 5 volts peak to peak and use that to drive the low pass filter. djsfantasi Joined Apr 11, 2010 7,764 Feb 19, 2015 #3 I used an op amp to scale the signal to 0-5V and fed it into an RC filter to smooth out the signal, getting an envelope of the sudio signal.
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
If you really want to switch audio with little more than a simple transistor, consider a circuit like this: simulate this circuit – Schematic created using CircuitLab Basically what you do is short the input to ground by enabling the transistor. Disadvantage is that the output level will be at least 6dB lower than the input level.
Transistors for an Audio Switch - Page 1 - EEVblog
https://www.eevblog.com/forum/beginners/transistors-for-an-audio-switch/
I want to make a custom audio switch box to be able to change between my headphones whenever i want just by the flick of a switch. I was wondering if i could just use regular npn transistors to direct the current from my computer or …
Using Transistors As Switches - Phil Pem
https://pe2bz.philpem.me.uk/Power/-%20Pulse/Info-UsingBipolarTransistors-as-Switches/transwit.htm
Transistor switches are used for a wide variety of applications. Many amateurs will notice that the circuit in Figure 1 is used as the PTT in many transmitter circuits. Transistor switches are commonly used to turn on transmitter circuits, LED’s, cooling fans and even relays. However, when using a transistor to turn on a relay coil, it is ...
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