Reusing an Old Power Center
Intro: Reusing an Old Power Center
Under the monitor power centers were extremely popular in the 1980s. They’d typically have switches labeled Computer, Monitor, Printer, and Aux. They fell out of favor when computers started to use ‘soft switches’. You’ve probably got one in some junk box gathering dust.
I repurpose them as general purpose household power controls. One’s used in the kitchen for small appliances (make sure not to overload the power center’s ratings), in the workroom on the tool bench, in the bedroom to shut off lamps and assorted wall-warts (like the cell phone charger), and even in the computer room (of all places). The computer room power center is used only to control various accessories – not the main computer and monitor.
The general rule is to only use the power center with devices with hard power switches (a physical on-off switch) or something which is always on whenever it’s plugged in (like a wall-wart cell phone charger). Do not use a power center with something which needs power (anything with a clock) or something which can be turned on and off with an infrared remote control – items like that always have to have power.
STEP 1: Reusing Power Centers
A typical power center has four to six outlets with the switches on the front of the unit. In some cases there are extra outlets which are always powered (non-switched outlets).
My computer room power center is the most versatile one in my place. I’ve placed the two wall-warts on the opposite sides so they don’t interfere with any of the other items. Ordinary power cords are used for the other outlets.
My computer room power center is the most versatile one in my place. I’ve placed the two wall-warts on the opposite sides so they don’t interfere with any of the other items. Ordinary power cords are used for the other outlets.
STEP 2: More Wall-warts
It’s possible to squeeze in another wall-wart by using a 3-1 power “cube” as a spacer so that wall-wart doesn’t interfere with the other cables.
STEP 3: My Setup
From left to right this power center controls an external hard drive, a free-standing floor lamp on the opposite side of the room through an extension cord, a small desk fan, a power strip, and a flatbed scanner. Instead of putting the power center under the monitor (which is probably too heavy for the power center anyway) I’ve put it on the side where it can be reached without getting out of my chair.
I use the power strip for testing various temporary items before they become part of my permanent computer setup. It’s convenient to have switchable outlets near my desk for experiments.
With this setup the flatbed scanner and external hard drive only draw power when they’re actually on, the free-standing lamp is easy to control from my chair, and I can have a nice breeze when it’s too hot.
An optional final step would be to print new labels to identify each of the switches, but I didn’t think that was necessary, my brain quickly remembered each switch’s purpose.
Note - the author's website, Neat Information , has many other DIY projects and activities.
I use the power strip for testing various temporary items before they become part of my permanent computer setup. It’s convenient to have switchable outlets near my desk for experiments.
With this setup the flatbed scanner and external hard drive only draw power when they’re actually on, the free-standing lamp is easy to control from my chair, and I can have a nice breeze when it’s too hot.
An optional final step would be to print new labels to identify each of the switches, but I didn’t think that was necessary, my brain quickly remembered each switch’s purpose.
Note - the author's website, Neat Information , has many other DIY projects and activities.
9 Comments
SveetV 7 years ago
just got one of these from my wife's dead grandparents. very useful. i didn't realize it was officially called a "power center.". thanks for the hit~!
criggie 12 years ago
Also note, if its intended to live under a CRT it will have decent load bearing abilities, and also will be shielded to stop tube flicker.
philip42 12 years ago
"Power centers" have always been designed to sit underneath computer monitors to minimize deskspace and have the switches in an easy to reach location, so they're designed to handle the weight of a monitor. They do have *reasonable* load bearing capabilities. They typically support a 17" CRT monitor - but will _NOT_ support the weight of a 21" giant. Of course YMWV.
They've got adequate shielding (metal cases, EMI filters) that I haven't seen any flicker with the monitors I've used.
Because so many items are powered by soft switches (any computer with an ATX or later power supply, most monitors)) these power centers are basically obsolete for their original purposes (controlling the various pieces in a computer setup). I don't think anybody's manufacturing them anymore.
On the other hand, because they are less useful for their original purposes they are sold used extremely inexpensively in yard sales and thrift stores, about $5 or so. I'm using two and have a spare unit in case I need it for another project or one of my existing units fails.
onemoroni1 12 years ago
account3r2 12 years ago
account3r2 12 years ago
deepouterspace 12 years ago
One of them (pictured) is upside-down on the top shelf of my networking closet. The labels i made are angled down. The labels are Master, Modem, Router, Light, Wireless, and Booster.
I remove the 5 screws from the inside that hold the faceplate on and replace them with some pieces of velcro. This makes it easy to remove the front and switch out the labels but may be completely unnecessary since I've not had to change them yet.
I've also got one in the computer shop and one that controls my stereo and Ipod charger. I fixed my parents up with one so that I can help them more easily over the phone when their internet goes down...
Indispensable! Thanks for the instructable!
stevenh429 12 years ago
Nostalgic Guy 12 years ago