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Unread 17-02-2008, 11:58
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Question Victor 884 voltage regulators

Does anyone know what type of voltage regulators are on the Victor 884?
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Unread 17-02-2008, 12:04
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Re: Victor 884 voltage regulators

If you are referring to the 9 things that LOOK like a 780x voltage regulator, they are actually a MOSFET, I believe... but I do not have the part number in front of me.

There are many different types of semiconductor devices that look similar to this, as the "package" is called a TO-220. So just as you have many different DIP IC's that look the same, you can also have many three-pinned parts that look the same.

I take it you are planning to re-build a blown victor?

Jason
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Unread 17-02-2008, 12:08
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Re: Victor 884 voltage regulators

The MOSFET Jason is referring to is a irl3103
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Unread 17-02-2008, 15:14
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Re: Victor 884 voltage regulators

I don't know about the Victor 884, but the Victor 883 uses the 5V version of the LM2931 in an SOIC-8 package. They have a PIC16F627 doing the signal processing. The mosfets on the 883 are the IRL2203N. The high side gate voltage for the mosfets is generated by a simple boost regulator. Op amps are used to control the voltage going to the gates.

-Ken
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