• Skip to main content
  • Skip to primary sidebar

Homemade Circuit Projects

Need circuit help? Post them in the comments! I've answered over 50,000!

Blog | Categories | About | Contact | Calculators-online
You are here: Home / Induction Heater Work Coil Calculator

Induction Heater Work Coil Calculator

This simple calculator will estimate the inductance of a flat pancake coil used in induction heaters, based on:

  • Number of turns (N)
  • Spacing between turns (s) in millimeters
  • Wire diameter (optional, we’ll assume it’s negligible unless you want it)
  • Coil outer and inner diameter (to get average radius)
pancake coil

Formula to Estimate Inductance (Pancake Coil)

We’ll use an approximate formula derived from the Wheeler formula for spiral coils:

L = (μ₀ * N² * r²) / (8r + 11w)
Where:

L is inductance in Henries

μ₀ = 4π × 10⁻⁷ H/m (permeability of free space)

N = number of turns

r = average radius of the coil in meters

w = radial width of the coil (outer radius - inner radius) in meters

We can calculate:

w = (N - 1) * spacing

r = (inner_diameter + outer_diameter) / 4
Induction Heater Work Coil Calculator
Calculator by homemade-circuits.com

Pancake Coil Inductance Calculator













Reader Interactions

Need Help? Please Leave a Comment! We value your input—Kindly keep it relevant to the above topic! Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

circuit simulator image

Subscribe to New Posts




Categories

  • Arduino Projects (89)
  • Audio and Amplifier Projects (132)
  • Automation Projects (17)
  • Automobile Electronics (101)
  • Battery Charger Circuits (83)
  • Datasheets and Components (104)
  • Electronics Theory (143)
  • Free Energy (37)
  • Games and Sports Projects (11)
  • Grid and 3-Phase (19)
  • Health related Projects (25)
  • Home Electrical Circuits (12)
  • Indicator Circuits (14)
  • Inverter Circuits (88)
  • Lamps and Lights (142)
  • Meters and Testers (69)
  • Mini Projects (46)
  • Motor Controller (64)
  • Oscillator Circuits (27)
  • Pets and Pests (15)
  • Power Supply Circuits (108)
  • Remote Control Circuits (50)
  • Security and Alarm (64)
  • Sensors and Detectors (101)
  • Solar Controller Circuits (59)
  • Temperature Controllers (42)
  • Timer and Delay Relay (49)
  • Transmitter Circuits (29)
  • Voltage Control and Protection (39)
  • Water Controller (36)




Other Links

  • Privacy Policy
  • Cookie Policy
  • Disclaimer
  • Copyright
  • Videos
  • Sitemap




People also Search

555 Circuits | 741 Circuits | LM324 Circuits | LM338 Circuits | 4017 Circuits | Ultrasonic Projects | SMPS Projects | Christmas Projects | MOSFETs | Radio Circuits | Laser Circuits | PIR Projects |

Social Profiles

  • Twitter
  • YouTube
  • Instagram
  • Pinterest
  • My Facebook-Page
  • Quora
  • Stack Exchange
  • Linkedin



  • Recent Comments

    • Swagatam on How Shunt Regulator TL431 Works, Datasheet, Application
    • SA on How Shunt Regulator TL431 Works, Datasheet, Application
    • Farmtech on Free Energy Generator Circuit – The N-Machine
    • Nitesh Agrawal on How to Design Simple LED Driver Circuits
    • Swagatam on How to Design Simple LED Driver Circuits

    © 2025 · Swagatam Innovations