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Search: Posts Made By: Travis
Forum: PC Power Supply Discussion 1 Day Ago
Replies: 43
Views: 1,138
Posted By Travis
Chicony Power (Hipro) and AcBel won't be happy to...

Chicony Power (Hipro) and AcBel won't be happy to hear they're grouped to Seasonic. For almost every Delta PSU in HP/DELL servers/workstations there is a Chicony counterpart, and AcBel makes...
Forum: PC Power Supply Discussion 3 Weeks Ago
Replies: 11
Views: 307
Posted By Travis
http://www.techpowerup.com/reviews/Silverstone/ST6...

http://www.techpowerup.com/reviews/Silverstone/ST60F-ESB/5.html
This unit also failed the CL2 test.
Forum: Testing Methodology Discussion 3 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
It doesn't have to be cut off at peak. There are...

It doesn't have to be cut off at peak. There are two options:
1. All hold-up time tests are performed at the same phase angle.
2. For every UUT we find out its MINIMUM hold-up time.
Forum: Testing Methodology Discussion 3 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
The worst condition for APFC units is when the...

The worst condition for APFC units is when the bulk capacitor just begins to charge, that is, when the energy coming from the PFC stage is increasing and equals the energy the PWM stage is requiring....
Forum: Testing Methodology Discussion 3 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
Unfortunately, SSR is based on SCR and only cuts...

Unfortunately, SSR is based on SCR and only cuts off when voltage crosses zero, but we don't want the input to be cut off at zero.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
There IS a "good enough" standard because how...

There IS a "good enough" standard because how hold-up time is read from the oscilloscope shot is WAY more imprecise, than the error that cutting off the AC source 0.1ms later than desired contributes...
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
X-bit Labs make the entire load test hardware and...

X-bit Labs make the entire load test hardware and software on their own, but neither of you have challenged their validity.

We put forward the idea and make a prototype design. Anyone who's...
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
You'll need a P-channel and a N-channel MOSFET in...

You'll need a P-channel and a N-channel MOSFET in series.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
To be frank, SM-8800 is inaccurate too.

To be frank, SM-8800 is inaccurate too.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
Well this device will work in a known, repeatable...

Well this device will work in a known, repeatable and verifiable way. If you want it to work 10,000 times or 100,000 times without a mistake it surely will and you'll see that in a visual way, for...
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
Well, although such a small device is NOT a...

Well, although such a small device is NOT a precise test equipment, it can still be useful and precise enough for hold-up time tests as long as you know what you're doing. Our major goal is to make...
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
Since Phaedrus knows what I'm saying I assume he...

Since Phaedrus knows what I'm saying I assume he already has an EE degree, or something equivalent.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
Relay looks better to me.

Relay looks better to me.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
That's what I'm planning to do. A switch to...

That's what I'm planning to do. A switch to activate the comparator.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
Yeah, with a stripboard you can reduce the total...

Yeah, with a stripboard you can reduce the total BOM to some dozens of dollars.

The output of comparator should be latched so once the relay is triggered it will only be released after a power...
Forum: PC Power Supply Discussion 4 Weeks Ago
Replies: 24
Views: 740
Posted By Travis
First the thermistor should be attached to the SR...

First the thermistor should be attached to the SR card, then the SR card is soldered to the main board, and finally the thermistor connector is plugged to the 2-pin socket on the main board.
Forum: PC Power Supply Discussion 4 Weeks Ago
Replies: 3
Views: 245
Posted By Travis
How does the PEG & CPU cable on HCP Platinums look?

AFAIK there are two types of Antec HCP Platinum models, one type being the original HCP-850/1000 Platinum which has RED 16pin jacks, the other type being the new HCP-850/1000/1300 Platinum which has...
Forum: PC Power Supply Discussion 4 Weeks Ago
Replies: 24
Views: 740
Posted By Travis
TH may refer to "thermistor". So it should...

TH may refer to "thermistor". So it should connect to a thermistor to control the fan speed according to temperature.
Forum: Testing Methodology Discussion 4 Weeks Ago
Replies: 86
Views: 2,049
Posted By Travis
You don't have to buy a Chroma AC source to make...

You don't have to buy a Chroma AC source to make a consistent hold-up time test.
All you have to do is to make an MCU-based small device which cuts off the AC input (with a relay or solid switch) at...
Forum: PC Power Supply Discussion 03-13-2014
Replies: 8
Views: 371
Posted By Travis
CWT's PUO platform.

CWT's PUO platform.
Forum: PC Power Supply Discussion 02-23-2014
Replies: 23
Views: 1,145
Posted By Travis
You can tell the real OEM by the 18+10 pin mobo...

You can tell the real OEM by the 18+10 pin mobo connector. Seasonic KM3, you bet.
Forum: PC Power Supply Discussion 02-23-2014
Replies: 23
Views: 1,145
Posted By Travis
A few years ago they claimed their products are...

A few years ago they claimed their products are ATX12V 2.32 compliant, now they're introducing this ATX12V 2.4 standard. Neither can I see, unfortunately. What's been changed in these revisions,...
Forum: PC Power Supply Discussion 01-30-2014
Replies: 8
Views: 359
Posted By Travis
Xigmatek told Ecova they'll be using Sirfa as the...

Xigmatek told Ecova they'll be using Sirfa as the OEM for this model, but turned to Andyson's platform at last?
Forum: PC Power Supply Discussion 01-17-2014
Replies: 20
Views: 1,415
Posted By Travis
The PWM signals for LLC stage in AX1200i should...

The PWM signals for LLC stage in AX1200i should be a couple of fixed signals, that is, PWM signals with fixed frequency and fixed duty cycle. In AX1200 these signals are generated by simple circuits...
Forum: PC Power Supply Discussion 01-17-2014
Replies: 20
Views: 1,415
Posted By Travis
The two stage design achieves high efficiency...

The two stage design achieves high efficiency because:
1. The "DC transformer" stage operates in its most optimal condition;
2. Most switches are soft-switching in this topology.

I'm not sure...
Showing results 1 to 25 of 500

 
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