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Old 22nd September 2012, 03:41 AM   #181
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Congratulations My Friend, Very Nice Job You Have There Pal, You Have Plenty Of Power Right There !!! Are Those Winding Machines? Homemade Winding Machines?
Cheers.......
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Old 22nd September 2012, 08:57 PM   #182
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Well thanks Mr. Kimberator,
I bought this winding machine from scrap,rusted and not working condition,Cleaned it ,fitted with2" nylon blocks to increase working height,Aligned it,made a new reel carrier to take the load of 10" and up to 20 kg. reels,fitted with worm geared 30 volt D.C.motor pulley and v belt and paddle speed control and finally painted it.the table top small drill machine is fully made by me apart from d,c, motor and chuck(mouth),made from raw iron rods,plates,cast iron pipes,which I myself cut,worked on lathe machine,welded,grinded,drilled and fittedand finaly painted,my next hardware project is to make a big torroidal winding machine to wind kind of torrid traffos I have previously shown,some more photos of my work
regards to all senior members.
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Old 23rd September 2012, 08:55 AM   #183
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This Is What I Call "True DIY Spirit", Again Congratulations My Friend, My Brain Almost Fries As I Am Trying To Finish The 1.5Kw @8R Amp.....I'll Let You Know When The Job Is Done....
Best Wishes Mr, Vedmitraa.....
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Old 23rd September 2012, 03:12 PM   #184
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Well thanks again Mr.Kimberator,
Here is what I have been collecting for next steps,all sort of ferrite cores,can I go now to next classes,what do you suggest Mr. Kimberator,waiting eagerly for your project.
Regards
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Old 3rd October 2012, 06:11 AM   #185
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Rod Elliots amp now modified by me .More than 3 kw ;81volts;.7% distortion at 2ohms loads at output.Simulated in multisim 11
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Old 3rd October 2012, 01:24 PM   #186
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Photos of the Multisim file of Rod Elliot modified.Please All the learned seniors correct me if there is any thing wrong in this or if can be modified more,as results in Multisim are showing mentioned results.
VedMitra Sharma
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Old 4th October 2012, 12:23 AM   #187
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one issue, the input LTP offset adjustment pot, 200ohm, a fixed resistor of say 330ohms per side to the wiper arm makes for a bullet-proof design....should the pot open up in the field, you are sure to loose all your output trannies....
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Old 4th October 2012, 05:26 AM   #188
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Thanks Mr. Tony,
I am sorry but could not understand your suggestion,as I don't know much theory.Will you be kind enough to post corrected photos or file.I will be gratefull.
Regards
VedMitra Sharma
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Old 4th October 2012, 05:32 AM   #189
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Default Yeah, You're About Right Tony But.....

Quote:
Originally Posted by Tony View Post
one issue, the input LTP offset adjustment pot, 200ohm, a fixed resistor of say 330ohms per side to the wiper arm makes for a bullet-proof design....should the pot open up in the field, you are sure to use all your output trannies....
May Be You're About Right, But I Think It Depends On What Quality Pot You're Using, In My Personal Experience There's Nothing Better Than The Use Of Fixed Resistors, But That's Limits The Adjust, Sometimes Necessary, DC Offset, This Is Why I Always Use ALPS Sealed Precision Multiturn Potentiometers, This Way I Can Assure That You Don't Have Any Issues With Pot For Long Time, Or Make Proper Calculations To Get The Right Values With Fixed Resistors.....Just My Point Of View, Best Wishes To Anyone
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Old 4th October 2012, 06:41 AM   #190
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Quote:
Originally Posted by vedmitraa View Post
Thanks Mr. Tony,
I am sorry but could not understand your suggestion,as I don't know much theory.Will you be kind enough to post corrected photos or file.I will be grateful.
Regards
VedMitra Sharma
you can match the input LTP trannies for hFE.......so that you don't rely on the 200ohm pot for output offset adjustments that much.....
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