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Old 22nd August 2010, 02:38 AM   #521
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Boards arrived in the mail today Peter, thanks for all.

Russellc
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Old 24th August 2010, 12:27 PM   #522
joefish is offline joefish  United Kingdom
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Hi All, this is my first post although I am a long standing lurker.

Are there any F5 boards available or anyone planning on doing an F9 layout.
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Old 24th August 2010, 05:04 PM   #523
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After a couple of email exchanges with Peter Daniels, he says he doesn't have them in stock; though no further info on when the new boards (if any) will be ready. Let's sit tight and wait patiently

Cheers~
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Old 25th August 2010, 12:51 AM   #524
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Quote:
Originally Posted by chlorofille View Post
After a couple of email exchanges with Peter Daniels, he says he doesn't have them in stock; though no further info on when the new boards (if any) will be ready. Let's sit tight and wait patiently

Cheers~
Cviller just posted he has a few up for sale, I've only built with Peter's, but many I know have also used Cviller's boards. Similarly, Tech-DIY is supposed to be offering kits soon....Peter did tell me he still had plenty of power supply boards.

russellc
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Old 2nd September 2010, 12:43 AM   #525
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I am building a pair of F5 monoblocks. Each one with a transformer, a full diode bridge for each rail, and four 22.000uF caps with the 4x 0.1r 3w each full dual rail board.

Only one quick question: Is it ok if I put jumpers as in the way shown on the attached picture? These pads will be unused, so I am guessing that placing 3 of them could be better for making a dual supply PSU. I don't think it will make a ground loop.
Power will be taken to an F5 board from the marked outputs. These are your F5 boards. There is a wire from the F5 ground pad to the marked pad on the picture. The return of the speaker will go where marked in the picture.

Can anyone give it a quick look and check if it is alright?



FYI, it will carry all caddock MK132, and Mills for the power resistors. Capacitors are Mundorf MLytic SI, Schottky TO-247 rectifiers

I don't think I will place the thermistor and the current limiter circuitry on the F5. I want that bunch of small Hi-Q resistors and pairs of caps sounding at their bests. Adding more stuff get close to double the amount of components in the circuit.

Thanks, regards

Regi
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Old 2nd September 2010, 01:43 AM   #526
Tea-Bag is offline Tea-Bag  United States
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i put all grounds on the left center ground from pic.
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Old 2nd September 2010, 09:54 AM   #527
AndrewT is offline AndrewT  Scotland
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Hi,
you have shown 4pads on each PCB with red links.
Are any or all of these 4pads connected with traces on the underside?
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Old 2nd September 2010, 07:50 PM   #528
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Yes, Andrew, they are connected on the underside.

Teabag, I understand that you are joining both rail's grounds between the two gnd pads under and above the marked v+/v- output pads? Then, in which pads are you soldering the ground from the F5 board and the return from the speaker?

I'll do the same drawing in the underside, it should be clearer for you guys.
Sorry for a minor mistake. I wrongly drawed the connections from the diode bridges on the previous post. Not important for the matter.
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Old 2nd September 2010, 08:13 PM   #529
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Regi,
Don't tie the two in the middle, just one on left between v+ and v-. Attach speaker ground to it, board grounds to it, and signal ground to board or here. Then attach CL60 to it, and other side to Chassis and IEC ground. Shouldn't hum.
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Old 2nd September 2010, 08:23 PM   #530
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Quote:
Originally Posted by Tea-Bag View Post
Regi,
Don't tie the two in the middle, just one on left between v+ and v-. Attach speaker ground to it, board grounds to it, and signal ground to board or here. Then attach CL60 to it, and other side to Chassis and IEC ground. Shouldn't hum.
When you actually say "it", what are you referring to?

Can I use some pads for the task of connecting spk return, signal ground, earthing...?
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