Hi, Given that this power supply has happened to at least acouple of members, I wonder if there is a GFI (Ground Fault Interrupter) switchthat could be put on the mains supply – or a different

I posted an explanation on this forum when I announced the availability of 5.10.02. The 5.10.03 release is a version only for European users to try. I thought it might fix a problem that I haven’t

I'm confused. Ray's website for the driver shows the latest version that can be downloaded as 5.10.02, but the history page shows the latest version as 5.10.03 (has fix for comma-period swap issue).

Jimmy, Thankyou for this. I'm no electrical engineer, but I think I ran the test yousuggested. 1) Iset my meter to read DC volts. 2) Iturned the PS ON. 3) Iput the red meter lead on the red

Christopher, Thanksfor the kind offer, but this thing weighs a ton and isn't worth theshipping. Another group member has the same make and model I have and he had thesame problem. He replaced one

Actually that sounds very plausible. Rolando

I remember one member had warm cables back last year(?) His DC power supply +13.8 V DC lug was touching the power supply chassis. I think the current loop would be from +13.8 V DC to chassis to

Modern switching power supplies use a frequency of about 20Khz to 2Mhz instead of the old-school 60hz to change voltages from one level to another. The higher the frequency, the smaller the

Most likely some kind of failure in the rectification andfiltration electronics of the power supply. Probably a cold solder jointor a bad filter cap. I would offer to fix it for you if you sent it

I would say that it is very unlikely that a floating ground orspurious ground differential could damage an Ethernet port unless the groundvoltage difference was really high. Maybe 100 volts

Woody, I don't know about the "noise adjuster" knob on a communications grade switching power supply. I haven't ever seen one in any of the power supplies I have used but I have used Astron brand

Recently somebody (I think it was Roland) suggested that what we want is a good quality regulated SWITCHING power supply. Why a SWITCHING PS instead of an old-fashioned transformer PS? I thought

Thisis beginning to sound similar to a problem I have with a "new" (two years old,but never used) 12v Pyramid 10a regulated power supply. When Iuse this PS, any DC power cable hooked up to a DC

Well, that is the only connection between the laptops and the CP4. On the other hand I cannot see any way that an ethernet connection fault can destroy and entire computer. I would really like to know

Ethernet cables don't normally carry any groundconnections. Special PoE or high RFI applications are morecomplicated. There are tiny isolation transformers behind every Ethernetport. Ethernet

I would get at least a 1000kva unit. And replace that CP4 power supply. That's way moreimportant than a UPS. And call an electrician to check out your ACsystem. -Christopher

Use a voltmeter to measure what voltage difference existsbetween the laptop's chassis ground and the CP4's chassis ground. NOT theground pins of the AC power cords. However spurious ground

Thanks Rolando. I can live with "boingy" as long as the mount doesn't lose track of where it is going. I did a more careful calculation of the moment of inertia of the Schupmann and it came out

I have mounted a 10" F14 scope on a 1200. Slewing a scope like that is no problem at all. Might be a bit boingy and take a moment to settle, but it does not represent any excessive load on the mount.

From our website: 25 Amp Variable Volt Power Supply (PSVPW25A) It has a 3 prong power cord with ground plug. Rolando