Dual Rectifier Isolator (Gen 3.0)
Note: Generation 3.0 not for new applications.****** A dual rectifier has all the same outstanding performance characteristics of a single rectifier, but provides discharge protection for two batteries; two, one-way electrical valves in a single package. DC current will flow from the alternator to the batteries, but current will not flow between the batteries when discharged. Dual rectifiers are commonly deployed in dual battery configurations where each battery may be discharged independent of the other. A common problem with conventional “marine” or “RV”; style isolators (aside from performance issues related to the obvious voltage drop and associated heat) is dealing with an internally regulated alternator. A dedicated excitation circuit insures hassle-free integration with internally regulated alternators. Ultra-low on-resistance means devices require no heat sinking and no airflow at currents up to 300 amps. . Dual rectifiers are epoxy encapsulated in a custom ABS enclosure and are well suited for hostile environments. POWER-GATE is recommended by top battery manufacturers to insure that DC power gets to where it’s needed without the excessive heat and voltage loss typified by more common, lesser performing silicon and Schottky devices. Included on every POWER-GATE Dual Rectifier is a violet Alternator excitation wire. When system voltage (12 or 24 volts respectively) is applied, the MOSFET array located between the Main battery cathode and Alternator input anode is enhanced for a period of 60 seconds. This trigger is initiated when the violet wire is momentarily connected to the engine start circuit typically tapped at the starter solenoid, or the wires leading to the starter solenoid. When triggered, the user will note a four second delay between trigger initiation and alternator excitation. The purpose of this circuit is to insure the Alternator’s regulator excites at vehicle start-up. If the starter circuit is inaccessible, the device can be factory programmed for an alternate trigger like switched system voltage from an accessory port. If an alternate trigger configuration is required, contact engineering to discuss your needs.
Dual Rectifiers can handle between 100 amps and 300 amps. Need help configuring a Dual Rectifier? Click Here. For current levels less than 100 amps, or exceeding 300 amps, please contact our engineering department at 858.720.1339. For OEM applications, military and fleet sales, special applications, or general questions please call us at 858.720.1339.
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