Audio Trigger Transistor

power - How to trigger a transistor from iphone's audio ...

https://electronics.stackexchange.com/questions/28971/how-to-trigger-a-transistor-from-iphones-audio-output-jack

I want to trigger a transistor using iPhone's audio output jack. My goal is to turn off an LED(which is fed by an external +5V battery) by sending an audio signal from …

DIY Sound Trigger - Vinland

http://www.vinland.com/Nikon_Sound_Trigger.html

1. A transistor, type NPN, for example 2N3904. 2. A diode, for example 1N914. The components are very non-critical. Almost any NPN transistor will work and any diode will be fine too. The black wires are "Ground" (common), the red one is audio input and the yellow trigger output. Step 3: The Camera Connections.

Audio Transistors - ON Semiconductor

https://www.onsemi.com/products/discrete-power-modules/audio-transistors

Schmitt trigger uses two transistors - EDN

https://www.edn.com/schmitt-trigger-uses-two-transistors/

ham radio - Turn on transistor with output from sound card ...

https://electronics.stackexchange.com/questions/273734/turn-on-transistor-with-output-from-sound-card

My plan is to use one audio channel as the audio input to the radio, and the other input to drive this circuit. The transistor would connect the radio's MIC line to GND through a 2k resister, which is supposed to trigger PTT. The LED circuit is just to see if the idea works at all.

Schema Amplificatore Audio Transistor / Class-A MOSFET ...

https://liawastiong.blogspot.com/2021/10/schema-amplificatore-audio-transistor.html

Filtro digitale software dsp audio ssb/cw. Il secondo operazionale è un trigger di schmitt, il cui morsetto invertente è collegato all'uscita del primo operazionale. I transistor q1 e q2, come pure il trasformatore t1, determinano quanta potenza può erogare l'inverter.

Build Simple Transistor Circuits - Homemade Circuit …

https://www.homemade-circuits.com/how-to-build-simple-transistor-circuits/

TRANSISTOR VOLUME CONTROL CIRCUIT - Interfacing - Arduino ...

https://forum.arduino.cc/t/transistor-volume-control-circuit/17676

I have constructed a circuit using a transistor to switch the positive wire of the line out from the mp3 player. The output is an Active speaker it takes a power input of 9v AC. The transistor i'm using is a BC548B, the resistor from the pin out is 2.4k Ohms. The mp3 player is the mp3 trigger v2 from sparkfun.

GaN400 Power Amplifier | Peachtree Audio

https://www.peachtreeaudio.com/products/gan400

The GaN400 is a “class-D” stereo power amplifier that utilizes GaNFETs (Gallium Nitride Field-Effect Transistors), an 850-watt RMS regulated power supply, a fully balanced topology and a low global negative feedback design to achieve an astounding 400 watts-per-channel while achieving sound quality that is remarkably faithful to the input signal.