Corsair TX750 Stability

[allenk09]

You can see this drift in and out of frequency by HUGE amounts (the wobbly lines). Almost 90Khz over about an hours worth of time. This is on the same level as the cheap HEC power supplies. You can also see faint vertical lines that are a byproduct of the power supply.

I cannot find a power supply that is stable, and doesn't produce ridiculous amounts of RF. So far the cleanest one I've had is a $18 350W diablotek. The only ones I've heard that are very clean and stable are the Antec Truepowers. Anyone else know any good ham radio operator friendly power supplies?

 

[Charlie98]

What about your source power (wall power?) I'm not exactly an electrical engineer but sometimes that's the weakest link in the power chain.

I have that very same PSU... I'm curious to see what you will find.

 

[billyb0b]

That's fairly stable for AC mains. Since your sample rate is so tiny the deviation (or instability) is very very small.

 

[Anteaus]

Your post made me curious. I'm a layman in regards to all this. Considering that your service load will vary (appliances, lights, etc), could you be simply looking at your power supply simply reacting to varying input voltage? It is normal for voltage to drop slightly then come backup. We tend to only notice the large drops via dimmed lights (AC compressers, heaters, etc), but it happens all the time with even small loads.

Also, what impact does this have during day to day operation? Would the variance you describe have any meaningful impact on the operation of your computer?

 

[billyb0b]

Also, what impact does this have during day to day operation? Would the variance you describe have any meaningful impact on the operation of your computer?

virtually nonexistant in a home environment. household appliances can handle minor variances in power. scientific and military applications, and electrical engineering are practically the only instances where understanding how power affects the performance of electronics

 

[allenk09]

virtually nonexistant in a home environment. household appliances can handle minor variances in power. scientific and military applications, and electrical engineering are practically the only instances where understanding how power affects the performance of electronics

This is the only thing in my house that makes this type of noise, and is this unstable. As a ham and SWL, all of my stuff is _dead quiet_. Like I said, I don't see this when I plug in my diablotek $18 supply. I've only had problems with the two I've tried. Corsair and HEC, both now on the same levels of RF noise that wobbles all around my radios.

 

[billyb0b]

This is the only thing in my house that makes this type of noise, and is this unstable. As a ham and SWL, all of my stuff is _dead quiet_. Like I said, I don't see this when I plug in my diablotek $18 supply. I've only had problems with the two I've tried. Corsair and HEC, both now on the same levels of RF noise that wobbles all around my radios.

Measure the spread and check Corsair's info. I bet it's within its design norms.