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Joined: 4/29/2007(UTC)
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I assembled my Rev C boards this evening, it took about 3 hours. The kit is very nice and well thought out.
I have a couple questions before I power this thing up, just to make sure I don't let out the magic smoke.
Each channel has only a single rectifier, so this is a single rail design?
So each channel gets one pair of secondary wires from my transformer (http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=122-640), correct?
Do I need to wire power supply ground to anything?
My kit came with 4, 2-connector screw terminals. I used two of them for each channel's input, what are the other two for?
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Rank: Administration
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Joined: 10/24/2006(UTC)
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Glad you like the kit. Here are some answers: Quote:Each channel has only a single rectifier, so this is a single rail design? Nope, it's dual rail. The rectifier provides both rails, and the centertap of the transformer is the ground. Quote:So each channel gets one pair of secondary wires from my transformer (http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=122-640), correct? No, you form a center tap by tying the two center secondaries together (RED+ORANGE), then provide three connections to each boards power connections (AC1: BLACK, AC2: YELLOW, PGND: combined RED+ORANGE). Quote:Do I need to wire power supply ground to anything? Tie the mains ground to the chassis. Keep all other grounds (signal and power) isolated from the chassis. Quote:My kit came with 4, 2-connector screw terminals. I used two of them for each channel's input, what are the other two for? The others are for the LED connector at the front of each board (optional). If you have any other questions, don't hesitate to ask. Better safe than sorry.
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Rank: Member
Groups: Member
Joined: 4/29/2007(UTC)
Posts: 13
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Thanks, that's more clear.
When you say tie the mains ground to the chassis, you mean just the green wire from the AC power cord, correct?
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Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA
Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
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Usually, yes. I would check it though to be sure. Check for continuity between the ground prong on the plug and the green wire. Can never be too safe.
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