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Would the Hammond choke 193L tweek be something useful to add to a wall wart?
You could add it to the AC side either at the wart itself or at the AC wall plug if the wart does not plug directly into the wall.
Could it also be added to the DC side and would it do any good?
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Better yet, determine the DC voltage and current specs on your Wall Wart as it related to the component it is powering.
Go ahead and build your own beefed-up regulated DC power supply.
Not much you can do with a wall wart once you crack it open.
Typically too small, and not much space to tinker. Not worth the effort if you consider all aspects of what you want to achieve.
The choke will present a low resistance (57 ohms) to the DC side and may burn out the wall-wart transformer.
If your wall-wart is electrically noisy, it might be better to find a quieter power supply to replace it. The Hammond choke would still be useful to get the noise level down even further.
Thanks Al.
I am very suspicious of some of my wall warts because they are used with video components, transcoders, processors, etc. There are several kinds of connectors involved. I'm not sure what I should do and unfortunately, I have no DIY skills. Any suggestions on how I can replace the wall warts?
Thanks.
Each wall-wart that comes with a specific piece of equipment has been chosen to match the equipment's current and voltage requirements. There usually will be a label on the wall-wart that states the output voltage and current. These things are so poorly made that the output regulation is very loose. Thus, replacing a wall-wart with a larger one with the same voltage rating might result in a higher voltage to the equipment, which could damage the equipment.
If you don't have the tools to measure the voltage and current of your equipment, then it is dangerous to replace the wall-wart with a 'better' supply.
You can reduce the amount of AC noise produced by the wall-warts by plugging them in to a power strip that has some filtering. The label on a power strip that has filters will state the EMI/RFI attenuation in decibels (dB). If you don't see such a label, then assume it does not have filters in it. You can plug a Hammond choke into the strip to further reduce the noise.
It made a noticable difference in my McCormack Micro Phono Drive.
You're talking AC current here and it can kill you or burn down your house! Make sure you have a better idea of what you're doing before you tackle such projects. If, as you say, you have no DIY skills and aren't sure what's what with your wall warts, then slow down and learn a bit about electrical devices before you play with them.
It should be very easy to wire a Hammond choke into a plug and cable in and of itself. If I've understood correctly, simply doing that SAFELY and pluging it into your AC somewhere in or near your audio equipment should give you notable improvement. But even that should be done with at least some knowledge of how to wire up a device and house it so that it's safe.
So go back to square one and read more and be more confident before you proceed. Or have a more knowledgeable friend walk you through a couple of projects first.
Many proejcts are relatively simple, once you know basic wiring and safety. It's worth your while to start slowly and learn from good example and success, rather than from shorting something you value out, including your body!!!!
A wall wart can be replaced with a linear regulated power supply, and this may be useful for some audio components such as Dac/squeezebox-type devices if they currently run on a wall wart. Be careful with how tight the range of output voltage must be, the current, etc etc
http://sound.westhost.com/articles.htm
Start here
Mikee55
"Yeah, but it was fused!"
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