W A R N I N G !

W A R N I N G !

This page is full of non-facts and bullsh!t, (just like the internet and especially forums and other blogs), please do not believe entirely without exercising your intellect. Any resemblance to real things in reality is purely coincidental. You are free to interpret/misinterpret the content however you like, most likely for entertainment, but in no case is the text written on this blog the absolute truth. The blog owner and Blogger are not responsible for any misunderstanding of ASCII characters as facts. *cough* As I was saying, you are free to interpret however you like. *cough*

Thursday, April 30, 2009

"Semi-DIY" power conditioner

EMI filter, bought from Koba for $3 IIRC.

Took apart an old unused power strip. Originally thought best if can fit the filter inside, but missed by just a few mm. If going external I should've gone for the bigger ones.

Reason for wanting to go internal is safety - the chassis of any EMI filter/PSU with EMI filter is connected to the ground which is the mid-voltage point of the EMI filter, and will give you a sting if the gound is not connected. Worse still, if the ground is not connected and there is a short circuit, the entire chassis will go live, and that's quite a huge area of contact for killing you.

IEC input, makes things a little easier. Would've wished for IEC output though. :P

The filter, by Delta Electronics. Sorry for the bad camera quality. Good for 3A @ 250V.

Finished product

I couldn't do a "fire test" because Koba kapo-ed the fuse. Testing with the multimeter shows it to be safe though.

Also, taking this power strip apart showed me how bad some of the workmanship of our power-related products can be. There were a few bad connections which are potential points for failure and tripping the circuit-breaker/starting a fire or electricuting someone if that fails. BTW I've had two power strips and a mains power socket that failed on me and tripping the house since I moved here to Punggol just five years ago.

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