Are transformers regulated or unregulated devices?

posted in: Products Transformers Constant Voltage

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Standard transformers are unregulated devices and rely on the power company to maintain consistent regulation. Power companies in the USA typically guarantee +5/-10 percent.

Regulated devices are power supplies, not transformers. Semper Fi's Power Modules produce a regulated/constant DC voltage.


The advantage of the regulated device is that the output voltage is maintained even when the primary (line voltage) is fluctuating within design parameters, but voltage drop to the load still needs to be addressed.