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1. #Windings calculator for a magnetic amplifier plus
2. #Windings calculator for a magnetic amplifier series

#Windings calculator for a magnetic amplifier series

If you can find a schematic for the old Miller TM series welders you will see exactly how the magnetic amplifiers are used in the output to regulate the voltage or current levels. It will have its least limiting effects when the DC current through higher voltage primary's are ran at their maximum rated current levels. , which is the frequency at which the voltage across the secondary is at a minimum.

Its not an ideal magnetic amplifier circuit but it is functional non the less! The control voltage and currents are rather unknown though. The AC windings need to be in series and the two transformers are then ran 180 degrees out of phase from each other so that one blocks one half of the AC wave and the other blocks the other half of the AC wave. The two DC winding are limiting the magnetic fields in the AC side by only letting the limited amount of current flow in one direction and nearly non in the other direction due to inductive reactance.

#Windings calculator for a magnetic amplifier plus

The light output can be reduced a little but the efficiency suffers greatly for it with most common types.Ī 20% drop in light output may mean a 50% loss of working efficiency in some designs plus a substantial loss of working life as well so there is no actual savings or bulb life gains by doing so.Īs far as a magnetic amplifier two 2:1 or 4:1 isolation transformers set up in series with the higher voltage windings carrying the DC current and the two lower voltage windings put in series with the load can work to a reasonable degree as a basic magnetic amplifier. On the wire table look up resistance per unit of length for the gauge selected. Controlling HID type street lamp intensity is very limited because of the nature of how they work. Calculate the winding factor for the core, wire gauge, and number of turns selected.