F5 Turbo Builders Thread - Page 10

bobodioulasso · 5th March 2012, 08:49 PM

Is'nt Nelson saying 800 Khz bandwith using twin pairs /32 v rails?
I am lost.

jacco vermeulen · 5th March 2012, 09:48 PM

Yep, with more gain.

800 with 2 pair, so ~200 with 8 pair.
From 28V peak to 70Vpeak, 200 divided by 2.5, makes 80KHz bandwidth.
To get back to 800, minimum would be 10 JFET pairs.
(28 for the original F5)

10, 12, or 28.
6 of one or half a dozen of the other, all the same.

Nanook · 6th March 2012, 01:15 AM

...looks like this. Oops, that's a R5 Turbo.

What's a F5 Turbo?

sippy · 6th March 2012, 04:02 AM

Hehe......
little known fact about the R5 turbo - the turbo charger was rated at 50 'in stage' Minutes !!!!!
An F5 Turbo might run as hot as one of these hyper active shopping trollies. I'm lucky enough to know some one who owns one AND I've had a few rides in it, it makes some of the most amazing whooshes, bangs, burps and pinging noises I've ever heard......no room for ICE - not that you'd be able to hear it.

chchyong89 · 02:22 PM

Start building a V1 without P3, hope everything going smooth

PS, life without a decent camera is a crime

thanong · 8th March 2012, 02:51 PM

Quote:

Originally Posted by chchyong89

Start building a V1 without P3, hope everything going smooth

PS, life without a decent camera is a crime

Hi chchyong89,I would have that board.Where you got from.Can you give me a detail please.

chchyong89 · 8th March 2012, 03:15 PM

Quote:

Originally Posted by thanong

Hi chchyong89,I would have that board.Where you got from.Can you give me a detail please.

I sent my layout for fabrication. Try paying attention this thread, maybe someone will run a group buy

a.wayne · 8th March 2012, 03:21 PM

Quote:

Originally Posted by Nanook

...looks like this. Oops, that's a R5 Turbo.

What's a F5 Turbo?

Quote:

Originally Posted by sippy

Hehe......
little known fact about the R5 turbo - the turbo charger was rated at 50 'in stage' Minutes !!!!!
An F5 Turbo might run as hot as one of these hyper active shopping trollies. I'm lucky enough to know some one who owns one AND I've had a few rides in it, it makes some of the most amazing whooshes, bangs, burps and pinging noises I've ever heard......no room for ICE - not that you'd be able to hear it.

OT...

I have an 300 bhp one here , great little car no brakes ....

nrg2009 · 8th March 2012, 06:22 PM

Quote:

Originally Posted by jacco vermeulen

800 with 2 pair, so ~200 with 8 pair.
From 28V peak to 70Vpeak, 200 divided by 2.5, makes 80KHz bandwidth.
To get back to 800, minimum would be 10 JFET pairs.

I'm a beginner. I understand basic concepts. What does 'bandwidth' mean for an amplifier? I don't quite understand what 800Khz bandwidth means and how it is better or worse than 80Khz. Maybe someone could expand on this?

bobodioulasso · 8th March 2012, 09:28 PM

What about googling "amplifier bandwidth"

5th March 2012, 09:48 PM	#92
jacco vermeulen diyAudio Member Join Date: Oct 2004 Location: At the sea front, Rotterdam or Curaçao	Yep, with more gain. 800 with 2 pair, so ~200 with 8 pair. From 28V peak to 70Vpeak, 200 divided by 2.5, makes 80KHz bandwidth. To get back to 800, minimum would be 10 JFET pairs. (28 for the original F5) 10, 12, or 28. 6 of one or half a dozen of the other, all the same. __________________ Not so much,.......if it says "ZM" in the corner.

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5th March 2012, 08:49 PM	#91
bobodioulasso diyAudio Member Join Date: May 2008	Is'nt Nelson saying 800 Khz bandwith using twin pairs /32 v rails? I am lost.

6th March 2012, 04:02 AM	#94
sippy diyAudio Member Join Date: Jun 2008	Hehe...... little known fact about the R5 turbo - the turbo charger was rated at 50 'in stage' Minutes !!!!! An F5 Turbo might run as hot as one of these hyper active shopping trollies. I'm lucky enough to know some one who owns one AND I've had a few rides in it, it makes some of the most amazing whooshes, bangs, burps and pinging noises I've ever heard......no room for ICE - not that you'd be able to hear it.

8th March 2012, 09:28 PM	#100
bobodioulasso diyAudio Member Join Date: May 2008	What about googling "amplifier bandwidth"