Controller Packages
ENERPRO Controller Packages provide the ideal solution to the toughest part of your phase controlled converter or controller design. Just add your SCR package to an Enerpro firing board and regulator "Power Combo" and reap the packaging flexibility and cost savings of making, instead of buying, your power supply.
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Firing Boards
ENERPRO Firing Boards -- the industry standard for more than a decade -- employ proprietary digital LSI technology to deliver cost-effective and reliable high current "picket fence" gate pulses, soft-start circuitry, and voltage or current control of the delay angle. The delay angle varies with an inverse proportional relationship to the command angle (maximum command equals minimum delay).

ENERPRO firing boards can be combined with optional auxilliary firing boards, regulator boards, and special purpose boards to provide a complete control package.
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Auxilliary Firing Boards
Each ENERPRO auxilliary firing board provides the ability to drive six to twelve additional SCRs. You can also daisy-chain up to five auxilliary firing boards with a single Enerpro firing board. Auxilliary firing boards can be used with the FCRO-4100, FCOG-6100, FCOG-1200 and FCOVE-6100 models.
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SCR Assemblies
ENERPRO SCR assemblies are fully engineered for top performance and reliability. These open frame assemblies are suitable for sealed or ventilated enclosures. Fan cooling and fuse assemblies are available as options.

We can also design and fabricate custom SCR assemblies or fully integrated OEM power units complete with firing board, regulator and SCRs to meet your exact requirements.
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Regulator Boards
ENERPRO regulator boards are the perfect control package complement for ENERPRO firing boards. Our product line includes stand-alone regulator boards and piggy-back, plug-in boards.
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Snubber Boards
In SCR converters, or AC controllers, a high rate-of-rise in anode-to-cathode voltage, or dV/dt, occurs when a SCR ceases conduction, or when another SCR in the circuit is gated into conduction. High peak voltage is produced when an inductive circuit connected to the SCR is interrupted. The peak and rate-of-rise (dV/dt) of the SCR voltage must be limited to avoid erratic circuit operation and device damage. Connected anode to cathode, the snubber circuit resistor/capacitor limits dV/dt and the metal-oxide-varistor (MOV) limits peak voltage.
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Special Purpose Boards
A variety of special purpose boards designed for use with ENERPRO firing boards are available. Please note that special purpose boards are not available with the FCRO-2100 or either of the Twelve-Pulse models
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Motor Starters
The MSA series of Motor Starters offer several options to the user by combining different boards with the standard FCOG6100 SCR Firing Board.
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Custom Solutions
ENERPRO can design products for a variety of special applications, and have produced a wide range of custom designs for our customers.
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