Make a 1.5v Single-Transistor FM Transmitter

Hello!

I'm gonna show you How to make a Simple FM Transmitter that works with only an AA battery.

Components:
47 pF Ceramic Capacitor x1
33 pF Ceramic Capacitor x1
10 pF Ceramic Capacitor x1
22 uF Electrolytic Capacitor x1
2SC655 (or BC548) Transistor x1
Single Battery Holder (AA Size)
small Breadboard/PCB
10cm Magnet wire x2
Audio Signal Source (e.g. a MP3 Player)

Tools:
Soldering Iron
Solder

Step 1: The Circuit and Parts

Here is the Circuit we're going to make.

Step 2: Start Soldering Parts on PCB

It takes about 10-12 mins to do this.

Step 3: Make the Coils

Wrap the first Magnet Wire around a thick pen or a size AAA battery.

Do the same for the second Magnet Wire, too.

...Then Solder them on PCB

Step 4: Final Steps

Solder the battery holder wires, Antenna Wire, and the Audio Source.

Step 5: Turn on Your Radio

Turn on a radio and set it at 89MHz FM
Connect the "Audio In" of the Transmitter to your MP3 Player (or any other non-amplified things playing music).
Place the Battery in the holder.

Enjoy!