What_is_a_mosfet

What is a MOSFET?

What does a MOSFET do?

A MOSFET (Metal-Oxide Semiconductor Field Effect Transistor) is used to replace the standard electro-mechanical trigger switch in your AEG's gearbox with a more efficient solid state switch. By installing a MOSFET switch, you also reduce the resistance in your AEG, making for an increase in trigger response.

A MOSFET switching unit is more efficient than the standard trigger contact switch, therefore voltage drop is greatly reduced. What this means is that you will be able to get more voltage from your battery to reach your motor; increasing your AEG’s rate of fire (ROF) by up to 30%. Another benefit of using a MOSFET is that it totally eliminates arcing between your trigger contacts, so they will never burn out while using high-voltage batteries.

BOTTOM LINE: By using a MOSFET you will be increasing your AEG’s Rate of Fire as well as the lifespan of the trigger switch inside your gearbox.

What does Active Braking do?

Active braking has all the features of the standard MOSFET Unit, with one additional feature: it prevents motor over-spin. Normally, when you pull the trigger in your AEG, momentum causes your gears to turn a little even after you let off the trigger. This means that your spring is left in a partially compressed state; even if you fire it a few times in semi-auto. Active braking takes this rotational energy and ‘burns it off’ in the form of heat. This benefits your gun by improving trigger response and feel. Your spring will also never remain partially compressed, taking that extra pressure off of your internals.

BOTTOM LINE: By using an Active Braking MOSFET you will prevent motor over-spin as well as the partial compression of your spring. In addition, you will see an improved trigger response and feel.

Why buy an "All-In-One" MOSFET Unit?

There are several benefits to purchasing one of our “All-In-One” MOSFET Units; most notably, they include a built-in 20Amp or 24Amp Resettable Fuse.

Our Resettable Fuses are made of a Polymeric PTC material in thin chip form. They are placed in series to protect a circuit from shorts and spikes in current. When used in an Airsoft AEG our resettable fuses will detect unusually high rates of current, and trip the circuit off to reduce the risk of damage to your gearbox, wiring harness, and battery.

At normal operating conditions the device remains at an extremely low resistance and allows the electrical current to flow through it without any restriction. When over-current conditions occur, the Polymeric PTC material heats up and its resistance increases sharply. Such a sharp resistance increase cuts off the current in the circuit and the fuse has now been “tripped”. Upon the fault current being removed, the resettable fuse cools and its resistance drops to the original extremely low value. The resettable fuse is now “reset” and allows the current through the circuit again.

In addition, our “All-In-One” MOSFET features all of the benefits of our Active Braking MOSFET Units; including preventing motor over-spin.

BOTTOM LINE: By installing an “All-In-One” MOSFET in your gun you will be protecting your gearbox, wiring harness, and battery from any unusually high rates of current that may occur. In addition, the Active Braking will prevent motor over-spin as well as the compression of your spring. As a result you will see an improved trigger response and feel.

Contact Us: info@hhairsoft.com

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