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Old 15th February 2011, 02:35 PM   #151
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Thanks, Brian - I just wanted to play on the safe side.
Is it a good idea to use LCDPS (which I already have) along with Placid in order to spread more even the consumed power? Let's say to power the digital part with LCDPS and the analogue with Placid?
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Old 15th February 2011, 06:12 PM   #152
LeonvB is offline LeonvB  Netherlands
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That would be a good idea: the digital part is already taken care of with the Tridents. You could use half a LCDPS to power a BII + Trident set, and use a Placid for other modules.
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Old 15th February 2011, 07:19 PM   #153
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Quote:
Originally Posted by LeonvB View Post
That would be a good idea: the digital part is already taken care of with the Tridents. You could use half a LCDPS to power a BII + Trident set, and use a Placid for other modules.
I even thought to use 1/2 LCDPS to power the XO Trident only, the other 1/2 for the other two Tridents and the Placid for the AVcc. Don't know if I will hear any differences, though
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Old 15th February 2011, 07:32 PM   #154
LeonvB is offline LeonvB  Netherlands
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Interesting thought, perhaps using 2 LCDPS's would be better though: you could separate the other Tridents too that way.
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Old 15th February 2011, 07:35 PM   #155
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You know, this is going to be endless, Leon
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Old 15th February 2011, 07:35 PM   #156
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You would need to cut traces on the BII board, and for little (if any) benefit.
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Old 15th February 2011, 07:53 PM   #157
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Quote:
Originally Posted by BrianDonegan View Post
You would need to cut traces on the BII board, and for little (if any) benefit.
The only benefit I see for sure is Placid will work in its optimum conditions.
Since I do have LCDPS and Placid boards anyway I might give them a try.

Brian, what current I need to set the Placid for to power AVcc module only, please? The same way it is set for the BII without Tridents or less?
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Old 17th September 2011, 08:59 PM   #158
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Question Placid HD BP tuning/testing

Could anybody help with Placid HD BP tuning/testing?

I've set VR1A/B to 450R and VR2A/B to 1K as manual says. Turn the power on and what I have:

Input after transformer: 14.9 VAC and 14.6 VAC

TP_VIN+ with TP_CCS+ says 0.593 VDC (593 mA?)
TP_VIN- with TP_CCS- says -0.764 VDC (764 mA?)

TP_GND2 with TP_VREF1+ 3.76 VDC
TP_GND2 with TP_VREF2- -3.78 VDC

TP_GND2 with TP_OUT+ 14.88
TP_GND2 with TP_OUT- -14.05

TP_SHUNT with TP_OUT+ 585 mA
TP_GND2 with TP_OUT- 790 mA

I can change TP_OUT+ with VR2A from +14.9 to 18 V only and TP_OUT- is not changing when I turning VR2B it just stays -14.04!

I thought that VRs are dead after my soldering. But I've turned off PSU, waited and measured resistance of VR1A/B and VR2A/B with turning.
VR1A 8.07K-1.8R
VR1B 9.86K-1.2R
VR2A 0.9R-9.37K
VR2B 0.8R-9.92K

Where should I check? What can be wrong?
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Old 17th September 2011, 09:08 PM   #159
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It could be an issue around the discrete error amplifier. You may want to start a thread on our support forum and post some pictures if you can.
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Old 17th September 2011, 11:35 PM   #160
reo is offline reo  Canada
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Hi
Taken from a previous quote .. LeonvB That would be a good idea: the digital part is already taken care of with the Tridents.
The analogue part is taken care of with .........
regards
rol
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