F5 power amplifier - Page 111

Zen Mod · 9th June 2008, 11:16 PM

Quote:

Originally posted by sandstorm33

Betcha it happens!!!

better hurry , before Papa brings new toy ...........

Nelson Pass · 10th June 2008, 12:42 AM

Yes. The B1 is scheduled beginning of July.

tms0425 · 10th June 2008, 12:48 AM

Quote:

Originally posted by Nelson Pass
Yes. The B1 is scheduled beginning of July.

Darn, I better hurry up and get that F5 done. I just barely made it on the F4 when the F5 dropped.

jackinnj · 10th June 2008, 01:14 AM

Quote:

Originally posted by Nelson Pass
Yes. The B1 is scheduled beginning of July.

I think that it was Eaton's AIL Division which did the avionics for that particular model (yeah, I know that for a fact.)

jackinnj · 10th June 2008, 01:22 AM

Here's the compensated version with the potential for putting trimming resistors on the various source resistors, 150 puffs on the inputs:

tms0425 · 10th June 2008, 01:31 AM

Jack - So maybe put an extra wide pad set on R12-13 for those of us that have axial instead of to220 resistors? Or even doubles for using the 100r 3w.

jackinnj · 10th June 2008, 01:36 AM

Yes, I can put an extra bit of trace and a pad for the axial resistors -- if you can give me the width of the leads and I will dimension the drill-hole appropriately.

I am not going to do a GB, but I will post the gerbers and a 100% PDF so folks can burn their own boards.

tms0425 · 10th June 2008, 01:42 AM

The Mills 5w is 0.17" dia x 0.562" body, 0.032" lead dia.
Mills 5w from PartsConnexion

I didn't compute it but assume a single 5w 100r would be enough(?)

fredlock · 10th June 2008, 04:55 AM

Jack,

Is that the final version of your tweak on F5? I'm sure you got it working to your expectation that's why you already posted the circuit diagram. I'm curios how it sound and would like to try it before the B1 is introduce by NP.

chinsettawong · 10th June 2008, 06:56 AM

Fredlock:

F5 sounds wonderful. It is an interesting design with no capacitor in the circuit.
In Thailand, we are arranging a group buy. For about one week, there is already a big number of people signed up. Please note that most of these guys are mostly devoted to vacuum tube amps. The post is at http://www.htg2.net/index.php?topic=31809.0

If you think you like to try, please do. I highly recommend it.

Wachara C.

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10th June 2008, 12:42 AM	#1102
Nelson Pass The one and only Join Date: Mar 2001	Yes. The B1 is scheduled beginning of July.

10th June 2008, 01:22 AM	#1105
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	Here's the compensated version with the potential for putting trimming resistors on the various source resistors, 150 puffs on the inputs:

10th June 2008, 01:31 AM	#1106
tms0425 diyAudio Member Join Date: Oct 2006 Location: Ft. Wayne, IN	Jack - So maybe put an extra wide pad set on R12-13 for those of us that have axial instead of to220 resistors? Or even doubles for using the 100r 3w.

10th June 2008, 01:36 AM	#1107
jackinnj diyAudio Member Join Date: Apr 2002 Location: Llanddewi Brefi, NJ	Yes, I can put an extra bit of trace and a pad for the axial resistors -- if you can give me the width of the leads and I will dimension the drill-hole appropriately. I am not going to do a GB, but I will post the gerbers and a 100% PDF so folks can burn their own boards.

10th June 2008, 01:42 AM	#1108
tms0425 diyAudio Member Join Date: Oct 2006 Location: Ft. Wayne, IN	The Mills 5w is 0.17" dia x 0.562" body, 0.032" lead dia. Mills 5w from PartsConnexion I didn't compute it but assume a single 5w 100r would be enough(?)

10th June 2008, 04:55 AM	#1109
fredlock diyAudio Member Join Date: Jan 2008	Jack, Is that the final version of your tweak on F5? I'm sure you got it working to your expectation that's why you already posted the circuit diagram. I'm curios how it sound and would like to try it before the B1 is introduce by NP.

10th June 2008, 06:56 AM	#1110
chinsettawong diyAudio Member Join Date: Jun 2006	Fredlock: F5 sounds wonderful. It is an interesting design with no capacitor in the circuit. In Thailand, we are arranging a group buy. For about one week, there is already a big number of people signed up. Please note that most of these guys are mostly devoted to vacuum tube amps. The post is at http://www.htg2.net/index.php?topic=31809.0 If you think you like to try, please do. I highly recommend it. Wachara C.

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