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Old 11th December 2008, 02:38 AM   #111
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I will try to modify it for Caddocks power resistors.

Two channel F5 amp board would cost half the price of F4 board.
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Old 11th December 2008, 03:13 AM   #112
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And now ready for Caddock power resistors.
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Old 11th December 2008, 04:28 AM   #113
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could you not more R1 and R2 to the left then rotate Q1 and Q2 so their faces can be coupled together? you have to move the ground, but looks feasible.
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Old 11th December 2008, 08:52 AM   #114
zristic is offline zristic  Serbia
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Payment sent for one F3. Thanks.
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Old 11th December 2008, 11:58 AM   #115
rhing is offline rhing  United States
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Payment sent for one F3 amplifier PCB and one F3 power supply PCB. I will hold off on the F4 boards in favor of the F5 boards that Peter is proposing.

Peter, thank you very much for your service provided.

Mithomas, thank you very much for organizing the Group Buy.

Mr. Pass, thank you very much for sharing your IP.
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Old 11th December 2008, 12:50 PM   #116
jims is online now jims  United States
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Default F5 board grounds

Hi Peter


For the F5 board, could not find out grnd, or PS V+ or V- grounds. Are you planning on using a chassis star gnd?


JimS
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Old 11th December 2008, 01:41 PM   #117
Tea-Bag is offline Tea-Bag  United States
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Default Re: F5 board grounds

Quote:
Originally posted by jims
Hi Peter


For the F5 board, could not find out grnd, or PS V+ or V- grounds. Are you planning on using a chassis star gnd?


JimS

Does this help?

Input - green is after diode DC 0v, yellow is 18v.

DC input after diodes

white is v+, wire two hear for a channel each. the bare wire is the star ground point, yellow is v-.

V+ V- and ground as bus wire
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Old 11th December 2008, 01:46 PM   #118
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G'Day,

Excellent work Peter with the F5, straight swop with my F4, easy to compare hey.
Well up for this.

Cheers
Bruce
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Old 11th December 2008, 02:47 PM   #119
kri_sch is offline kri_sch  Germany
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Payment sent for two F3 pcbs
Thanks Peter
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Old 11th December 2008, 02:48 PM   #120
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Quote:
Originally posted by tristania79
Payment sent for 4 x F4 PS, 2 x F3 amp board
oups copy cut mistake
I sent payment for 4 x f4 ps and 2 x f4 amp board
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