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Audio Activated Delay Switch Using Transistors - Circuits …
https://circuits-diy.com/audio-activated-delay-switch-using-transistors-diy-project/
Today we are going to build an Audio Activated Delay Switch Using Transistors. This circuit is easy to construct, we are only using transistors, relay, and a few other discrete components. This project is very useful for audio-related purposes. Hardware Components [inaritcle_1] Circuit Diagram Construction
Audio Switch Notes - Neat Circuits
https://www.neatcircuits.com/audiosw/index.html
The circuit below is an example of a simple audio switch: Values are not critical so experiment for best results. 2N2222 or any signal NPN transistor is used to invert the control logic if required. Note there is no power required This voltage can be from +5 to +15 volts. The circuit should mute sufficiently any audio from 15 hz to 20 khz.
Transistor as a Switch - Using Transistor Switching
https://www.electronics-tutorials.ws/transistor/tran_4.html
Basic NPN Transistor Switching Circuit The circuit resembles that of the Common Emitter circuit we looked at in the previous tutorials. The difference this time is that to operate the transistor as a switch the transistor needs to be turned either fully “OFF” (cut-off) or fully “ON” (saturated).
Digital Audio Selector Switch Circuit » CircuitsZone.com
https://circuitszone.com/digital-audio-selector-switch-circuit/
Digital Audio Selector Switch Circuit Diagram As shown in the circuit diagram, the ten input signals numbered 1-10 are applied to the bases of transistors T1-T10 via capacitors C1-C10 respectively. The bias voltages for the transistors are obtained with the aid of R1-R10.
Build Simple Transistor Circuits - Homemade Circuit …
https://www.homemade-circuits.com/how-to-build-simple-transistor-circuits/
Simple Two Transistor Oscillator This small experimental two transistor oscillator circuit can easily create audible frequencies within the range between 100 Hz and 2 kHz, operating a little loudspeaker. The circuit could be driven through 4nos of AA cells or constant 6 volt power supply.
Transistor as a Switch - Tutorialspoint
https://www.tutorialspoint.com/transistor-as-a-switch
Circuit Diagram of Transistor as a Switch Cut Off State (Open Switch) When transistor operates in the cut off region shows the following characteristics − The input is grounded i.e. at zero potential. The V BE is less that cut – in voltage 0.7 V. Both emitter – base junction and collector – base junction are reverse biased.
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.
Stereo Audio Switch Circuit - ElectroSchematics.com
https://www.electroschematics.com/stereo-switch/
switch This stereo audio switch circuit allows that with only one switch to select one of the four stereo channels. The internal switching is made posible with CMOS components. Each switch input includes a voltage divider to allow the switch to work in the linear zone of the characteristics, this ensures low audio signal distorsions.
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