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Old 5th March 2012, 07:37 PM   #931
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we are working on getting a truckload of the FQA's. Supply will not be a problem.
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Old 5th March 2012, 08:26 PM   #932
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Truckloads ........ I love the sound of that ......
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Old 5th March 2012, 10:37 PM   #933
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Quote:
Originally Posted by Geofd View Post
to achive this ?
200W is 40V peak.
To open shop, Vgs is 2-4 Volts for the IR, usually more than 3V, and 3-5 Volts for the Fairchild, see datasheets.
To bias them requires a bit more, then you have to add for sagging rails.

Then there's the little matter where you'd like the common cathode diodes to kick in. (me, i'd rather do at least 4A out before the doctor with the nitrous oxide enters)

On top of that, transformers usually can't be had with any desired secondary voltages, so the first one that would apply is a 33Vac.
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Old 5th March 2012, 11:01 PM   #934
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Same curves for the TO220 FQP19N20

The FQA12P20 need about 5.5 V

In the zoomed in 2 controll top and botom and a couple of pairs

I use to match them at 24 V 2A and constant themperature 50C

Tea Bag Could I have same please?
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File Type: jpg FQA19N20 Test03032012.jpg (383.0 KB, 330 views)
File Type: jpg FQA19N20 ZOOM INTest03032012.jpg (361.3 KB, 317 views)

Last edited by Bksabath; 5th March 2012 at 11:05 PM.
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Old 5th March 2012, 11:48 PM   #935
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bksabath, will need to discuss FQAs on another thread soon No commercials here. But I wanted to note that an effort is being made to get a large # of them available.
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Old 5th March 2012, 11:55 PM   #936
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Effort noted .........
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Old 6th March 2012, 12:31 AM   #937
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Just a quick question, can I use Lateral for F5? I got 30 pairs 10N20/10P20 yesterday.
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Old 6th March 2012, 12:49 AM   #938
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The V1 may be fun with Laterals.
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Old 6th March 2012, 01:03 AM   #939
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Any alternative for 2SJ74/2SK170?
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Old 6th March 2012, 01:57 AM   #940
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Any alternative for 2SJ74/2SK170?
LSJ74/LSK170
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