Amplifiers are an essential component of your audio system. You can always buy one from the audio stores and electronic centers, but it won’t hurt to know how to make a 12v amplifier yourself. Be it for budget reasons or just your curiosity, this kind of knowledge will always be handy. This article will teach you how to make these simple amplifiers at home.
How To Make A 12v Amplifier: Mini Bass
The steps are simple, and you can easily buy the materials you need from electronic stores near you.
Materials Needed To Make a 12v Amplifier
- B817 transistor
- 1k resistor
- 4700µf 50v capacitor
- 50k potentiometer
- 2-pin terminal block
- Heat sink
- A screw that would fit the hole of the transistor
- 3.5mm jack (cut from a headset)
- Cardboard rectangular size
Tools Needed On How To Make a 12v Amplifier
- glue gun and glue stick
- soldering iron and lead
- metal drill
Steps on How to Make a 12v Amplifier
- Use a metal drill to drill a hole in the upper right corner of the heat sink. Make sure that the size is similar to that of the transistor.
- Glue the heatsink to one of the short sides of the cardboard with the flat surface facing up.
- Screw the B817 transistor to the heatsink, with its pins pointing toward the other side of the cardboard.
- Glue the 50v capacitor beside the heatsink parallel to it, forming a right angle with the transistor.
- Glue the two 2-pin terminal block and the 50k potentiometer onto the other end of the cardboard across the heatsink. Place all three evenly spaced out with the potentiometer in the middle.
- Using a soldering iron, connect the resistor to pins 1 and 2 of the transistor.
- Then, connect one end of the capacitor to pin 1 of the transistor and the other end to pin 2 of the 50k potentiometer.
- Using some wires, connect pin 3 of the transistor to the first 2-pin terminal block and connect the other hole of the terminal block to the resistor wire connected to the transistor’s pin 2.
- Then connect pin 1 of the potentiometer to pin 3 of the transistor.
- Next, connect the 3.5mm jack to pin 3 of the potentiometer and the first 2pin terminal block.
- Connect a wire to the second terminal block and connect it to the resistor wire connected to pin two of the transistor.
- Insert two wires with alligator clips to the second terminal block. Connect the alligator clips to the speaker. Play music using the 3.5mm jack.
*You can also use a 2SC5200 Transistor with a 1000 µf /35v Capacitor
You can now use your amplifier to connect your instruments, phones, or devices that use a 3.5 mm jack to a speaker. You can also create housing for your amplifier to enclose it and protect the electronic pieces from damage. Now that you know how to make a 12v amplifier at home, you can use this for your stereo sound system. Learn more about amplifiers here.