F5 Turbo is posted - Page 34

Zen Mod · 23rd March 2012, 11:15 PM

still no dumber than Master of Dumbness

buzzforb · 23rd March 2012, 11:35 PM

If you are dumb, the i am comatose. Thanks for the help and patience!

Bksabath · 23rd March 2012, 11:40 PM

Quote:

Originally Posted by buzzforb

Nevermind. I am officially banning myself from posting on anything other than my own projects. Doing a disservice to anyone trying to learn

. Thinking about it more, still don't understand. not completely that is.

You are officialy dis-banned from posting

As promoting discussion is certanly big service to all.

Plus I commend your open attitude in admiting mistakes.

buzzforb · 23rd March 2012, 11:58 PM

AudioSan · 24th March 2012, 12:52 AM

Quote:

Originally Posted by buzzforb

AndrewT · 24th March 2012, 11:11 AM

Quote:

Originally Posted by Horio

I am shooting for 50W into 4 ohms per post #315.

Your math is just not making sense to me Andrew. You stated that you want to shoot for 25W into 2r0 per half of a bridged/balanced amp so:

Ibias = 2.5A
Imax Class A ~< 5 Apk
P ClassA = 5.0^2 x 2/2 = 25W into 2r0 (for one side of the balanced amp)

Doubling that gives you 50W Class A into 4r0 for a balanced/bridged amp (double the power into double the impedance). I think an Ibias = 2.5A is the "2.5" Jacco was referring to.

this is correct.
My 3.6A for bias is wrong. Sorry, I must have rushed the calculation.

Horio · 24th March 2012, 03:30 PM

Thanks Andrew.

jacco vermeulen · 24th March 2012, 04:09 PM

Quote:

Originally Posted by AndrewT

rushed

How un-you, remind me again, which was dance night and which one was tossing two lagers for the price of one up yonder loch ?

cyclecamper · 03:52 AM

Please forgive the questions of a neophyte who still has to look up the names for each characteristic to discuss...and is usually too lazy to do so...

Turbo schematics show a pair of diodes in parallel at every instance. So is two of these particular diodes optimized to minimize some kind of "leakage" in one direction or the other while sharing current and heat dissiaption, or is 3 or 4 in parallel even better (to eventually share the current but maybe react more smoothly stepped like an avalanche diode while running cooler)?

cyclecamper · 8th April 2012, 03:51 AM

Just out of curiosity,
are 2sk176 and 2sj56 suitable for an f5 turbo?

23rd March 2012, 11:15 PM	#331
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	still no dumber than Master of Dumbness __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

23rd March 2012, 11:35 PM	#332
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	If you are dumb, the i am comatose. Thanks for the help and patience! __________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

23rd March 2012, 11:58 PM	#334
buzzforb diyAudio Member Join Date: Oct 2010 Location: Burlington, NC	__________________ \|F6 Kit/Trasnformer GB Sign up sheet Closed,\|Primrose GB Sign Up sheetClick Here ...Shape the sound , Man!

8th April 2012, 03:49 AM	#339
cyclecamper diyAudio Member Join Date: May 2010 Location: was Chicago IL, now Long Beach CA	Please forgive the questions of a neophyte who still has to look up the names for each characteristic to discuss...and is usually too lazy to do so... Turbo schematics show a pair of diodes in parallel at every instance. So is two of these particular diodes optimized to minimize some kind of "leakage" in one direction or the other while sharing current and heat dissiaption, or is 3 or 4 in parallel even better (to eventually share the current but maybe react more smoothly stepped like an avalanche diode while running cooler)? Last edited by cyclecamper; 8th April 2012 at 03:52 AM.

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24th March 2012, 03:30 PM	#337
Horio Newbie diyAudio Member Join Date: Mar 2010 Location: San Francisco	Thanks Andrew.

8th April 2012, 03:51 AM	#340
cyclecamper diyAudio Member Join Date: May 2010 Location: was Chicago IL, now Long Beach CA	Just out of curiosity, are 2sk176 and 2sj56 suitable for an f5 turbo?

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