APFC (Automatic Power Factor Compensation) for Industrial Power Use to Minimize Penalty

Model: 549

Solderable DIY project kit for Engineering & Diploma students

Product of choice for Engineering & Diploma students worldwide.

Do-It-Yourself Kit :

Includes complete hardware comprising of discrete components, modules, PCB, controller etc. and tested program code for building the project. Extensive documentation for project execution including step-by-step instructions for Circuit building, Assembly procedure and Troubleshooting. (Tool kit-Multimeter, Soldering iron and program burner not included in the kit)

Rs.5,599.00 Rs.4,199.00



The project is designed to minimize penalty for industrial units using automatic power factor correction unit.

In this proposed system, two zero crossing detectors are used for detecting zero crossing of voltage and current. The time lag between the zero-voltage pulse and zero-current pulse is duly generated by suitable operational amplifier circuits in comparator mode is fed to two interrupt pins of a microcontroller. It displays time lag between the current and voltage on an LCD.

The program takes over to actuate appropriate number of relays from its output to bring shunt capacitors into load circuit to get the power factor till it reaches near unity. The capacitor bank and relays are interfaced to the microcontroller using a relay driver. The microcontroller used in this project belongs to 8051 family.

Furthermore, the project can be enhanced by using thyristor control switches instead of relay control to avoid contact pitting often encountered by switching of capacitors due to high in rush current.


Easy to use, Self-explanatory kit.

All-inclusive solution kit.

Extensive audio-visuals available.

Branding-free material.

Pre-programmed Microcontroller.

Automatic Power Factor Correction.

Call/mail for Tech Support from 10 am – 7 pm.

Can be Customized for Arduino, Raspberry Pi, PIC


Hardware Requirements

  • 8051 series Microcontroller
  • Op-amps
  • LCD
  • Shunt Capacitors
  • Op-amps
  • Relays
  • Choke
  • Switches
  • Slide Switch
  • Resistors
  • Capacitors
  • Crystal
  • Transistors
  • Diodes
  • Transformer
  • Voltage Regulator
  • Lamp

Software Requirements

  • Keil compiler
  • Language: Embedded C or Assembly

Buyer Feedback

Write a new review

There are no reviews yet.