Author Topic: Transistor to Amplify Radio Signals Sub-100Hz  (Read 578 times)

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Offline GeschwessautTopic starter

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Transistor to Amplify Radio Signals Sub-100Hz
« on: December 09, 2020, 04:18:46 am »
Hey guys,
Completely new to radio receiver circuits. So I was trying to pick up radio signals from 0-100Hz. I connected an antenna to the analog pin on my 16-bit resolution ADC which was hooked up to my Arduino and, as I was anticipating I got 0 readings. I did a little bit of problem solving and finally stumbled upon the solution to use a transistor to amplify the signal and make it readable to my ADC. I have 2n2222 transistors, however I am new to transistor amplification circuits and don't know what transistor I would need to amplify signals received by my antenna on the breadboard. Could anybody give me an idea of what transistor I would use for this, or if this is even possible?
« Last Edit: December 09, 2020, 04:41:47 am by Geschwessaut »
 

Offline Berni

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Re: Transistor to Amplify Radio Signals Sub-100Hz
« Reply #1 on: December 09, 2020, 06:44:13 am »
You do realize that in order to have an antenna that efficiently picks up 100Hz needs to be a 700km piece of wire.

This is one of the reasons 100Hz is not typically used for radio communication, the antennas for it are humongous. You can make low frequency antennas a more manageable size by using coils instead.

Also the power grids run at 50/60 Hz so there is a massive amount of interference there along with its harmonics.
 


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