This project details how to construct a basic DC to AC Power Inverter at home. An inverter is a device that converts direct current (DC) from a battery into alternating current (AC), allowing you to power household appliances from a low-voltage DC source. This design utilizes the CD4047 IC for oscillation and MOSFETs for power switching.
Components Required (Affiliate Links)
- IC-CD4047 ► https://amzn.to/3tSopt9
- Capacitor-0.22 pf ►https://amzn.to/3yiwF9y
- Variable resistor-20KΩ ►https://amzn.to/3w6O7vA
- Resistors-100Ω , 05w-(2) ►https://amzn.to/33NSzmS
- MOSFETs- IRFZ44N-(2) ►https://amzn.to/2RZ9aS3
Circuit
How the DC to AC Conversion Works
The inverter circuit functions by simulating the switching action of an AC current using the DC battery:
- Oscillation: The CD4047 continuously generates two alternating square wave pulses at the required AC frequency (e.g., 50Hz/60Hz).
- Switching: These pulses drive the two MOSFETs. The MOSFETs alternately switch the battery’s DC voltage across the two ends of the transformer’s center-tapped primary coil.
- Induction: This rapid, alternating switching of current creates a fluctuating magnetic field within the transformer—the same effect as if AC were applied directly.
- Voltage Step-Up: The magnetic field induces a much higher voltage across the secondary winding, converting the low-voltage DC pulse into a high-voltage AC square wave suitable for powering small appliances.
- Safety: The high-voltage output side of the transformer must be handled with extreme care. Use an appropriate fuse and power switch for safety.
Watch the full video tutorial here: How to Make a DC to AC Inverter at Home | CD4047 | MOSFET IRFZ44N | Step up transformer