8/7/2023 0 Comments Single transistor fm radio![]() I did not use 2N3904 because I don't have it. If it still does not work, Change the value of R2 using a potentiometer.ĩ- My transistor part number is S9014. I used 100 ohm instead of 470 ohm.Ĩ- After all of the previous steps. and If you need to change the transmitter frequency, Change the values of C4 and C5.ħ- I actually used a lower value of R3. FM transmitter is a low-power FM radio transmitter that communicates a signal from a sound gadget to a standard FM radio. fmradio radioreceiver DIY in this video, I am showing how to build an FM radio receiver using transistors. Just bring a pen and turn a wire around it 5 or 8 times. And I think it's better to rise the volume (Volume up) of the input audio.Ħ- Don't worry about the shape or the number of turns of L1. so, Each time you turn on the circuit, you should tune your receiver (Change the frequency of your receiver) until you get the best result.Ĥ- You should Not use a Mic as "Audio In". This radio Transmitter transmits signal up to a range of 20m-30m. ![]() If you don't have a long wire, you can connect an aluminium pot :)ģ- The frequency is not stable. This article shows you a simple FM transmitter circuit diagram and explains in detail about its working and part selection method. Receiver consists of a regenerative rf stage, TR1, followed by a two of three-stage audio amplifier, TR2 to TR4. You can use a higher voltage.Ģ- Using a very long antenna will help you a lot. This is the small FM transmitters using one transistor and 1.5 volts battery as power supply, in 98MHz to 100 MHz FM frequency range. This FM radio receiver circuit is very simple to build and is powered by just a single 1.5V battery cell. ![]() ![]() Here are the issues I met, they might be useful for you:ġ- Don't use a battery lower than 9v. Here is the circuit diagram of a simple radio that uses one transistor and few other passive components.The C6 and L1 forms a tank circuit which picks up the signal from your desired radio station.Diode D1, capacitor C2 and resistor R1 does the detection of the picked signal.The detected signal is coupled to the base of Q1 through capacitor C3.T. I made this circuit before and it works properly. This circuit is basically an oscillator which runs at around 100 MHz. ![]()
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