How to calculate the inductance of a center tapped solenoid ?

AI Thread Summary
To calculate the inductance of a center-tapped solenoid, it's essential to consider the primary coil's design, particularly its winding configuration and the core's properties. The inductance is influenced by the output frequency, which depends on both the inductance of the primary winding and the circuit's capacitance. The A_l (A-sub-l) value is crucial for determining inductance based on the number of turns, and it's important to refer to the core's datasheet for accurate values. When dealing with a center-tapped inductor, only one of the two primary coils is energized at a time, which differentiates it from standard two-terminal inductors. Understanding these factors is vital for effective transformer design and operation in ZVS power supply applications.
Indula
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I'm trying to drive a transformer using a ZVS power supply. The primary coil that we use here has to be wound center tapped. The output frequency depends on the inductance of the primary winding and capacitance used in the circuit.
The circuit of a ZVS power supply is as follows,
FSW2MICGNBEVVKF.LARGE.jpg


The transformer where the primary will be wound is as follows. It's a flyback transformer where the secondary is present and primary can be wound as we need.
s-l500.jpg
 
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Do you have the A_l (A-sub-l) value for that core?
 
What's A_I value means ? Is it the core permeability value ?
 
Indula said:
What's A_I value means ? Is it the core permeability value ?
It is usually given for cores so that you can compute the inductance based on the number of turns. Look at the datasheet for your core, for example.

This is a pretty good introduction to inductor design, and it includes a discussion of A_L:

https://www.ieee.li/pdf/viewgraphs/fundamentals_magnetics_design.pdf

1575567842004.png
 
Okay. Is there any thing that I need to take into account since it's a center tapped inductor ? Unlike 2 terminal inductors this one has 3 terminals due to center tap.
 
But only one of the two primary coils is energized at any given time, right?
 
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