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Very early LCD displays

I picked up some these curiosities in a car boot sale, no known history. Anyone have any info , particularly date. They...
3 comments posted 17yrs
posted by diverse
3 comments posted 17yrs posted by diverse

Load panel terminology: stab?

It's used in a load panel sticker that says something like "do not put more than 150 amps on one stab". What's a "stab"?
32 comments posted 17yrs
posted by moi
32 comments posted 17yrs posted by moi

NiMH battery charger question

If you have some 1.2 volt NiMH batteries, is there a difference in the quality -- or quantity -- of charge, if they are...
1 comments posted 17yrs
posted by jamiegoforth
1 comments posted 17yrs posted by jamiegoforth

death ray

Is it possible to construct a hand held weapon like those Star Trek toys? We know that lasers can cut flesh, as surgica...
20 comments posted 17yrs
posted by r_delaney2001
20 comments posted 17yrs posted by r_delaney2001

offer various brand caps,

offer various brand caps as follows,free shipping,worldwide express,paypal payment wholesale ny caps www.ebrand123.com...
0 comments posted 17yrs
posted by pradabrandsell
0 comments posted 17yrs posted by pradabrandsell

Breakdown voltage of PETG in Homemade Capacitor

I'm working on building a high voltage capacitor. I have heard that PET has a very high voltage breakdown. I came acros...
3 comments posted 17yrs
posted by ngdbud
3 comments posted 17yrs posted by ngdbud

Signal to noise ratio

This group lately seems to have a typical electronics problem- a very low signal/noise. In fact, it seems considerably...
2 comments posted 17yrs
posted by stauffer
2 comments posted 17yrs posted by stauffer

Valuable museum stocks?

Needing a bistable to operate on a supply voltage from 3 to 8 volts (depending upon the state of discharge of the batte...
1 comments posted 17yrs
posted by invalid
1 comments posted 17yrs posted by invalid

Interference

I recall reading that if an AM radio is tuned to frequency x plus or minus the heterodyne frequency a radio tuned to fr...
7 comments posted 17yrs
posted by dewhurst
7 comments posted 17yrs posted by dewhurst

Project Cases (UK)

If anyone is looking for cheap, high-quality project cases, I have 5 for sale on eBay for under half the cost price. Th...
0 comments posted 17yrs
posted by ryrpgebavpf
0 comments posted 17yrs posted by ryrpgebavpf

How to test upper limit on IR thermometer?

I have a cheap IR thermometer (pistol grip kind) that says upper limit is 500f. I'd like to read temps in the range of...
36 comments posted 17yrs
posted by gone
36 comments posted 17yrs posted by gone

Multiple FM frequency transmitter

I am looking for investigating if it is possible to buy a multi frequency FM transmitter. I want to broadcast a FM sign...
6 comments posted 17yrs
posted by lortefirewallregler
6 comments posted 17yrs posted by lortefirewallregler

B&K Precision Model 4011 Function Generator Price?

I have the Subject device, and am thinking about selling it. I bought it 9 years ago, and doubt that I even plugged it...
0 comments posted 17yrs
posted by wolftracks
0 comments posted 17yrs posted by wolftracks