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4hv.org :: Forums :: General Science and Electronics
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IGBT Amplifier

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Carbon_Rod
Fri Feb 17 2012, 05:44AM
Carbon_Rod Registered Member #65 Joined: Thu Feb 09 2006, 06:43AM
Location:
Posts: 1155
The thought of a massive amplifier is actually quite impressive.

If the frequency range is low, than perhaps one could build something like a massive continuous variable slope delta modulator.

Perhaps a few IKW75N60H3 would work if the bit rate was very close to the upper switching limits.
wink
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Avalanche
Fri Feb 17 2012, 06:03PM
Avalanche Registered Member #103 Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
I thought maybe the original poster wouldn't care if it sounded like a cheesegrater tongue as for temperature compensation, couldn't you just bring the bias pot out to the front panel? cheesey
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Steve Conner
Fri Feb 17 2012, 07:22PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
I've seen some expensive handmade guitar effects that had exactly that, a temperature knob.

There is also the Zvex Nano Amp, where the user manual says: "If the power supply doesn't start, it may be too cold. Try placing it on a radiator for 15 minutes."
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Experimentonomen
Fri Feb 17 2012, 07:23PM
Experimentonomen Registered Member #941 Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
Just to tease him a bit :P i bought 12 STE47N50 for cheap and is gonna use them for a large stereo poweramp posting 2x100WRMS at 8 ohms, 2x200WRMS in 4 ohms, 1x400W in 8 ohms bridged and 1x800WRMS into 4 ohms bridged.

I'm already working on having a 1.5kVA donut i have rewound for this project.
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