Product Announcement from Precision Incorporated

Precision, Inc introduces PFC Inductor Line-Image

Precision works with its customers to optimize a PFC solution for any specific application. In many cases, audible noise is not a problem. For example, when the power supply is housed in an enclosure with forced air, the PFC Inductor noise is not detectable and allows a lower cost solution. Also, if size is not the highest priority, there are many available options.

Precision can provide additional windings on the PFC Inductor to supply power for the PFC control circuitry. Using a voltage doubler circuit with this bias winding provides a semi-regulated output that is quite stable over the entire duty cycle range.

Power factor is the ratio of the real power to apparent power. Power factor can vary between 0 and 1, and can be either inductive (lagging, pointing up) or capacitive (leading, pointing down). In order to reduce a capacitive (or leading) power factor, an inductor is added to make the power factor equal 1. The whole purpose of making the power factor equal to one is to make the circuit look purely resistive (apparent power equal to real power).


  • Available for Use in Power Ratings from 200W to 1000W
  • Operates with Controllers from Several IC Manufacturers
  • Ranges from 100µH to 1000µH Under Full Load and are Designed for 100kHz Operation
  • Designed Using the Industry Standard Input Voltage Range 85VAC - 265VAC at 50/60Hz.
  • Uses a Toroidal Geometry to Allow the use of Thicker Wire to Decrease DC Resistance and Yield Higher Current Capacity
  • Uses Industry Standard Vertical Through-Hole Mounting Configurations and have an Operating Temperature Range of 20°C to +105°C
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