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Old 11th November 2004, 07:56 AM   #51
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Horrible s...s !
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Old 11th November 2004, 10:35 AM   #52
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Don't try to build that with IRF MOSFETs! The design is meant for Lateral MOSFETs (Hitachi) and will thermally run away without compensation. Also, the pinouts are different. Lateral are GSD whereas vertical (IRF) are GDS.
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Old 12th November 2004, 08:09 AM   #53
ezis666 is offline ezis666  Latvia
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Quote:
Originally posted by richie00boy
Don't try to build that with IRF MOSFETs!
mOSFETS in my PCB are IRF640/9640. works good, no thermal problem, Id0=100mA.I have built more than 10 PCB`s, no one with problem.
I use 2N5401, MJE350, MJE340,IRF640,IRF9640,R14, R15 = 0.22 ohms 5 watts, added 100n100V caps on power supply rails
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Old 12th November 2004, 08:34 AM   #54
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Then you are lucky with your thermal situation

I think you ought to modify your components list or at least point out the pinout differences:

T7 = BUZ900DP, IRFP240, 2SJ201, 2SJ162
T8 = BUZ905DP, IRFP9240, 2SK1530, 2SK1058

These devices have different pinouts and the uninitiated builder will not know what to do. The result will be destruction of the devices upon power up. It's not clear on your layout which pinout the design is for.
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Old 12th November 2004, 11:20 AM   #55
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Arrow Hello Brother

Hi Ritchie Boy,

My Younger brother's nick name is also Ritchie

regards
ampman
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Old 12th November 2004, 01:00 PM   #56
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Hi Ampman, I like your designs, looking forward to seeing more of them.
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Old 13th November 2004, 05:25 AM   #57
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Arrow Commentable Experienced Thoughts

Quote:
Originally posted by richie00boy
Hi Ampman, I like your designs, looking forward to seeing more of them.
RITCHIE TELL ME ABOUT UR SELF?
Which design do u like most and why??

Look at the pic of my younger brother when he was just 1 month old, but now he is 16.

ampman
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Old 13th November 2004, 10:48 AM   #58
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ampman,

I just enjoy reading and learning from your often animated posts A lot of them contain new and intriguing concepts.

I have a degree in electronic engineering and have been into DIY audio for about 10 years. At first I was into speakers, now I like amplifiers as well. I think class-d is the future for >100W, but it's a challenge to DIY.

Nice picture of your brother, I bet he is pleased you posted that on here
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