Solenoidal inductors are often used in high voltage, pulsed power, and power conditioning. The following diagram shows a simple single layer solenoid of length l and radius r.
The inductance of a solenoid can be found from the following formulas:
where N is the number of turns, R is the radius of the solenoid (in inches), and l is the length of the solenoid (in inches).
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where N is the number of turns, R is the radius of the solenoid (in cm), and l is the length of the solenoid (in cm).
The link below will take the user to a web page with a simple calculator to determine the inductance of a given solenoid configuration (based on the number of turns, coil radius, and height or length) using this first equation. It should also be noted that there are a number of other useful calculators on this same overall website.
Solenoid Inductance Calculator.
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