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Solid State Relays and EMI

I'm using some solid state relays, and having some problems with (I believe) EMI. http://www.cel.com/pdf/datasheets/ps7...
25 comments posted 22yrs
posted by dave.harper
25 comments posted 22yrs posted by dave.harper

Carbon Dioxide sensors

Do Carbon Dioxide Sensors exist? If so at what sensitivity/accuracy? And what about interface methods, say, to a 68HC11?...
9 comments posted 22yrs
posted by nac
9 comments posted 22yrs posted by nac

math and gears

I need some information that will help to build a robot arm, I need some help on calculating the gearing so that a join...
2 comments posted 22yrs
posted by andrew
2 comments posted 22yrs posted by andrew

Measuring Servo Power Usage?

I'm building a simple servo-powered bot, and I'd like to detect the strain placed on its servos. Am I correct in my rea...
10 comments posted 22yrs
posted by chrisks
10 comments posted 22yrs posted by chrisks

Unable to re-assemble automatic center punch

Hi All, I took apart my automatic center punch (Lisle p/n 30280) and son of a gun, careful as I was, the parts sprayed...
2 comments posted 22yrs
posted by you
2 comments posted 22yrs posted by you

Gluing Polycarbonate?

Is it possible, and if so how, to reliably join together two pieces of polycarbonate? My application would involve an i...
7 comments posted 22yrs
posted by chrisks
7 comments posted 22yrs posted by chrisks

HERO manual for sale

Hero 2000 manual for sale! http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5911360155
0 comments posted 22yrs
posted by comet
0 comments posted 22yrs posted by comet

Help with control by wire.

I am bulding myself a carrier unit. A small powered cart for lugging stuff about. I want to be able to control this uni...
3 comments posted 22yrs
posted by Gadgetfreak_2000
3 comments posted 22yrs posted by Gadgetfreak_2000

Data Communication ( Wireless )

Infotech Resources Ltd. has good and cost effective solutions using nordic ICs for Wireless data transfer between two m...
0 comments posted 22yrs
posted by ruchattur
0 comments posted 22yrs posted by ruchattur

4QD - 12v Uni 8 - Speed Controller - FOR SALE

4QD - 12v Uni 8 - Speed Controller - FOR SALE Hi, I'm selling a brand new one of these, worth £50, on eBay at (all one...
0 comments posted 22yrs
posted by brabuk
0 comments posted 22yrs posted by brabuk

12V Lead acid battery charging problems ...

My son's electric scooter's motor got pooched from harsh element riding, (Canadian winter -- go figure). In any event,...
4 comments posted 22yrs
posted by spam
4 comments posted 22yrs posted by spam

why is NASA editing these images??

this is a blatant lie that NASA has done to the people of the USA and most assuredly to the World. Why .just why would...
33 comments posted 22yrs
posted by nospam
33 comments posted 22yrs posted by nospam

Cold Heat Review

What follows is my review of the Cold Heat (www.coldheat.com) soldering iron. First off, let me note the reasonably goo...
3 comments posted 22yrs
posted by chrisks
3 comments posted 22yrs posted by chrisks

COM Serial Port signals

Can anyone point me at a good reference for the workings of the COM port on a PC? I need timing waveforms for the vario...
1 comments posted 22yrs
posted by bill
1 comments posted 22yrs posted by bill