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Last updated: November 17, 2025

1.5V 220 Volt Inverter | How to Make One From an Old Mobile Phone Charger

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1.5V 220 Volt Inverter Mobile Phone Charger

Learn how to build a 1v5 220 Volt inverter using an old mobile phone charger. Step-by-step guide, circuit diagram, safety tips, and applications for DIY electronics projects.

What is a 1v5 220 Volt Inverter?

A 1.5 V 220 V inverter is a product that can change the low-voltage DC input (1.5V) to the standard AC output 220V Inverters find a lot of applications in electronics to power equipment where there is no AC supply. With an EVoked mobile phone charger, one can make a small and effective inverter that can provide power to low-wattage devices. Important concepts of electronics, such as switching, transformation of voltage, and waveform generation, are also exhibited in this project.

diy electronics projects

The 1.5V 220 Volt inverter is a practical DIY electronic project, where you can make your own low DC voltage-to-standard voltage inverter. 220 V AC inverter. Amazingly, one can be created using an old mobile phone charger with some additional materials such as a transformer, transistors, and passive components. This kind of inverter is best used in the emergency supply of small appliances, LEDs, and low-power-consuming devices. Here, we have provided a step-by-step guide on how to do all these, starting with gathering the materials, assembling the mobile charger, the circuit, testing the output, and applying safety precautions. The given tutorial enables even novice users to build a workable 1v5 220 Volt inverter to use in a minor, do-it-yourself electronic experiment, and to use in the actual home setting.

Components Needed for the Inverter

Old Mobile Phone Charger

The charger provides a regulated DC voltage, usually 5V, which can be adapted to 1.5V input using series resistors or a step-down module. It acts as the main power source for the inverter.

Transformer

A small transformer steps up the low DC voltage to 220V AC output. Choose a transformer with suitable ratings for your expected load.

Transistors or MOSFETs

These act as electronic switches, converting DC into an oscillating signal for the transformer. Common choices are 2N3055 or IRFZ44N MOSFETs.

Diodes, Resistors, Capacitors

  • Diodes: For rectification or protection
  • Resistors: Current limiting
  • Capacitors: Smooth voltage fluctuations

Step-by-Step Guide to Build the Inverter

Preparing the Mobile Phone Charger

  • Open the charger carefully.
  • Identify the DC output wires.
  • Ensure proper insulation and safety while handling internal circuits.

Circuit Assembly

  • Connect the output of the charger to a switching circuit using transistors or MOSFETs
  • Use resistors and capacitors to stabilize the input signal.
  • Connect the output to the primary winding of the transformer.

Connecting the Transformer

  • Verify transformer ratings.
  • Connect the secondary winding to the AC output terminals.
  • Ensure all connections are insulated properly.

Testing the Output

  • Start with a low load, like an LED bulb.
  • Measure output voltage using a multimeter.
  • If stable, gradually test higher loads within the inverter’s limit.

Applications of 1v5 220 Volt Inverters

  • Emergency lighting
  • Powering small appliances
  • DIY electronics experiments
  • Charging small devices
  • Low-power LED setups

Safety Precautions

  • Avoid touching AC output terminals directly.
  • Ensure all wires are properly insulated.
  • Test under low load initially.
  • Use a fuse to prevent overcurrent.
  • Do not operate unattended for long periods.

Troubleshooting Common Problems

  • No Output: Check connections, transistors, and transformer.
  • Output Fluctuates: Check input voltage stability and capacitor values.
  • Overheating Components: Reduce load or check cooling.

Maintenance Tips

  • Keep the inverter clean and dust-free.
  • Check solder joints and wires periodically.
  • Avoid overloading beyond rated capacity.
  • Store in a dry, ventilated area.

Frequently Asked Questions - 1.5V 220 Volt Inverter Mobile Phone Charger:

Can I make a 1v5 220 Volt inverter from an old mobile charger?

Yes, by using a transformer, transistors, and passive components, you can convert the charger output into 220V AC.

What devices can be powered using this inverter?

Small appliances, LED lights, and low-power electronics can be powered safely.

Is it safe for beginners?

Yes, if you follow safety precautions like insulation, fuses, and low-load testing.

Do I need additional components?

Yes, you need a transformer, MOSFETs or transistors, resistors, capacitors, and optionally a 555 timer IC.

Can it handle heavy loads?

No, it is suitable only for low-power devices and experiments.

How do I test the inverter?

Start with a small load like an LED and measure output voltage with a multimeter.

Do I need a fuse?

Yes, a fuse prevents overcurrent and protects the inverter and connected devices.

Can this inverter be used continuously?

It is recommended for short-term use under low load to prevent overheating.

Can I use it to power a motor?

Only small motors within the current capacity of the inverter.

How do I maintain the inverter?

Keep it clean, dust-free, check wires and solder joints, and store in a dry ventilated area.

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Md. Jony Islam is a highly skilled professional with expertise in electronics, electrical, mechanical, and civil engineering, as well as finance. Specializing intransformer service and maintenance for 33/11kV substations, he ensures reliable and efficient electrical systems. His mechanical engineering skills drive innovative designs, while his financial acumen supports effective project budgeting. With a strong foundation in civil engineering, he contributes to robust infrastructure development. Md. Jony Islam's multidisciplinary approach ensures efficiency, quality, and reliability across all projects.