Upfc Related Display Of Lag And Lead Power Factor

Model: 245

Solderable DIY project kit 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)

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The project is designed to get a display of all three conditions of power factor ie linear, lagging and leading choosing appropriate load. Power factor is defined as the ratio of real power to apparent power.
In this proposed system the time lag between the zero voltage pulse and zero current pulse duly generated by suitable operational amplifier circuits in comparator mode are fed to two interrupt pins of the microcontroller. The microcontroller used is of 8051 family. It displays the time lag between the current and voltage on an LCD. The program takes over to actuate appropriate number of anti-parallel SCR’s at its output in series with either an inductor or a lamp or shunt capacitors into the load circuit to derive the power factor of each type of load for display.
Further this project can be enhanced in future by using delayed firing angle control method for each connected load through thyristors for achieving precise power factor.


Easy to use, Self-explanatory kit.

All-inclusive solution kit.

Extensive audio-visuals available.

Branding-free material.


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

Can be Customized for Arduino, Raspberry Pi, PIC


Hardware Requirements

  • 8051 series Microcontroller
  • LCD
  • Crystal
  • Shunt Capacitors
  • SCR
  • Current Transformer
  • Resistors
  • Capacitors
  • Choke
  • Lamp
  • Voltage Regulator
  • slide switches

Software Requirements

  • Keil compiler
  • Languages: Embedded C or Assembly

Q & A

Buyer Feedback

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  1. Rated 4 out of 5

    Varun vishesh

    Yes the kit delivered on time with the right components.All Technical queries were cleared and your Technical support is Average.I am satisfied while building the project.Yes I recommend about Edgefx in future.

  2. Rated 5 out of 5

    Jayant Deepak Deore

    Yes the kit delivered on time with the right components.No I didn’t call up for technical support.I am satisfied while building the project.I recommended to my juniors and sub juniors as well.

  3. Rated 4 out of 5

    Swapnil Bandiwadekar

    I come to know about Edgefx through Internet. I used the keyword ECE Readymade kit in Google to find Edgefx.I decided to buy a kit from Edgefx because it looks simple and I read the reviews even and referred material is also given. I like the readymade kit provided by Edgefx.Yes the kit delivered on time with the right components.I directly purchased the project through online.New Innovative projects should be added.

  4. Rated 5 out of 5

    Gautham Sreekumar

    I saw your website on Internet, I found project on your website according to my requirement, so I purchased.Delivery and product was good. Also I like to read everything on your Blog www.elprocus.com, it is very helpful to engineering students.

  5. Rated 3 out of 5

    Kolluri Sriram

    I heard about Edgefx from my friend, so that made me decide for Edgefx kit.Tutorial which you provided is very helpful the student, he can do the project by himself.