How to Build a Power Inverter How to Build a Power Inverter

A lot of people prefer building a power inverter on their own. All one needs for building a power inverter is to follow the instructions mentioned below.

Tools and Accessories Required:

  • 2 bipolar junction transistors
  • 2 820 Ohm resistors
  • 2 ring terminals
  • polarized 0.47 microfarad electrolytic capacitor
  • SPST (Single Pole-Single Throw) switch and an electrical wire
  • 24 volt AC transformer with fewer windings and a center tap on the transformer side
  • An electrical solder/soldering iron
  • A pair of electrical pliers

Step 1 - Connecting the Transformer, Capacitor and the Transistor

Cut 7 pieces of electrical wire, stripped a half inch at each end. One end of the first wire has to be soldered to the first transformer terminal. The other one has to be connected to the positive lead on the capacitor and the first transistor’s collector terminal, as well as to the first 820 Ohm resistor, through soldering as well.

Step 2 - Connecting the OHM Resistor to the Transistor

The free lead of the first 820 Ohm resistor has to be then soldered to the second wire. The other end of the wire has to be connected jointly to the first 82 Ohm resistor, as well as the second transistor’s base connection.

Step 3 - Connecting the OHM Resistor to the Emitter Connections

The one end of the third wire has to be jointly soldered to the first 82 Ohm resistor’s free lead, to one of the leads on the second 82 Ohm resistor and the emitter connections of both the transistors.

Step 4 - Connecting the Terminals

The third wire’s free end has to be soldered to the any of the terminals on the switch.

Step 5 - Connecting the 1st Transistor to the 2nd OHM Resistor

One end of the fourth wire has to be jointly soldered to the first transistor’s base connection and the second 82 Ohm resistor’s free lead.

Step 6 - Connecting to the 2nd OHM Resistor

The free end of the fourth wire has to be soldered to the second 820 Ohm resistor.

Step 7 - Connecting the 2nd OHM Resistor and Transistor to the Capacitor

One of the ends of the fifth wire has to be soldered to the 820 Ohm resistor’s free lead, the second transistor’s collector lead, as well as the capacitor’s negative lead.

Step 8 -Connecting to the Transistor's 2nd Terminal

The free end of the fifth wire has to be connected to the second terminal on the transistor’s center-tapped side through soldering the connection.

Step 9 - Connecting to the Switch

A ring terminal has to be slipped over one of the ends of the sixth wire and soldered to the wire. The other end of the same wire has to be connected to the switch’s free terminal. The switch has to be then turned off.

Step 10 - Connecting to the Transformer's Center Tap

The other ring terminal has to be slipped over one of the ends of the seventh wire. The free end has to be then connected to the transformer’s center tap.

Step 11 - Starting the Inverter

The inverter is now ready to use. A DC power supply or a positive terminal of a 12 Volt battery has to be connected to the ring terminal that is connected to the switch. The negative terminal has to be connected to the ring terminal with a connection of the center tap. The AC electrical device has to be finally connected to the transformer terminals opposite the center tap.

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