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No matter what its not going to cost less than a few hundred unless he can fix that one cheap.

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Formerly developmental type TA Power Amplifier circuit driving two piece speakerit is High power amplifier circuit upgradable on final transistor amplifier. Typical Performance Curves 1. I can walk you through that if you can get access to the datsaheet. Oh Michael, you read my mind. So everything has been tested other than output from the amp. You can’t even get plate amps with that much juice and the watt guys are pretty expensive. I have a dmm, but that’s about it for dxtasheet Can mosfet work as amplifiers?

IRFP350 Datasheet PDF

These dahasheet the large film caps and the small powdered iron inductor in between them. Checked all four mosfets in diode test mode and all read over between and with the positive terminal on the source and negative on the drain. The first is known as. I did test the signal sensing feature and that works. Unfortunately high ESR isn’t something that’s easy to test for. The components in question on my board are Q2: I don’t have a dummy load but do have some drivers lying around I don’t care about.


The circuit has been assembled and tested with datashset good performance.

But generally almost nothing vital right here. That would be most helpful troubleshooting.

This means the electrolytic fluid has leaked from the cap and its no good. A device without sufficient drive to switch rapidly may be destroyed by excess heating. Only one thing my novice eyes see. This is to allow for any caps to bleed off charge.

When ordering, include the entire part number. There’s a LOT of good electronics whizzes there who can help. Yeah I checked the driver with my dmm and got a 7. Two of the solder joints look dark.

This datasheet has been download from: I could wire those up. If you can get multimeter probes to the component legs or where they solder to the board, you can check the body diode conduction voltage with a multimeter.

Bulk ; Lead Spacing: Might be worth a try. This would make the yellow datasjeet area your output transistors. This is quite hefty. Only problem is it won’t turn on supposedly. Light blue looks like electrically insulating heatsink pad for everything that mounts to that piece of metal. There is good possibility that this is the same issue. Dagasheet last piece of electronic equipment that I repaired required replacing nearly electrolytic caps – 60 of them were surface mount that I simply replaced with regular axial lead caps.

Thus, in a irfo350 with a water depth of 6.


Also, use a flashlight and carefully inspect the PCB under each electrolytic cap. I guess you could just get an EP or EP and then some frequency control stuff. Also, the aluminum cage can’t be removed without desoldering two chips that pass through the holes, which I don’t have the equipment for.

IRFP (IRF) – Power Mosfet(vdss=v, Rds(on)=ohm, Id=16a)

Mark provided a great way to test the output transistors. I would expect them to be if they were to offer any reasonable protection of the FETs, so again if you read anything other than. I’ll give the driver a check and will try loading the amp. This is an easy test I usually do as a ‘first check’ to see if a FET is damaged.

The control circuit of the VSI is based on a PIC 16F microcontroller in which pulses are programmed to eliminate from 3th to 9th order datasheeh for different modulation index ratio.

All fets have the same markings so i would think are the same model. Could always retro the enclosure if it is in good shape Find the perfect Christmas gift with eBay this Christmas. I may have datasjeet a mistake with wich one had the greater power dissipation but this is where I got my data sheet from. So even if they measure fine you need to look real carefully for leaking fluid or any sort of discoloration around them.