Electronics Forum / Electronics / July 2006

I saw some chokes that had three wires bound togetehr at the ends (parallel) and wound five times around a toroidal core.  Why would they do that?  Doesn't that reduce the inductance?  Why not just use one wire?

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At least I think it is a fuse... it looks exactly like a fuse but instead of a glass tube it is a white solid material.  I am afraid to break it open because it might have something toxic inside.  I don't need it.  Is it safe to discard in the trashbin?

Why is it that in cartoons a character can use a TV remote ona TV set that has a rotary tuner?

I bouhgt an old computer on eBay and when I opened up the case to clean out the years of dust there was a wasps nest!!!

Is it better to mount the transformer on the printed wiring board or the speaker frame itself?  I think the speaker is a better spot b/c it makes the board cheaper (less holes, less space) but will it adversely affect accoustics?  I don't notice a difference

WHy is a bridge rectifier labeled as CR?  I always use BR on my designs.  B as in bridge, R as in rectifier.  Hey I'm a regular einstein, but how does CR relate to a doide?  They could have used CR instead of X for CRystal.  I think that would be better, so I use that in my ...

I think microwave ovens operate at something like 3 gigacycles per second, and phones are something like 2.4.  Well if a microwave frequency can make your eyes explode then these cell phones can't be all that good for us either

Who cares what a bunch of Europeans say things should be names?  I think Kilocycles per second is much better sounding than Kilohertz.  It also is more descriptive as well

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Have you heard of the new revolutionary Cold Heat soldering iron?  Some people are hyping it so much you'd think that regular irons will be obsolete.  I have use a Cold Heat and I can tell you firsthand it stinks.  What you do is put your wire between the fork-shaped tip and a ...

I am not familliar with electetronic signs, symbols, terms, jargon ...
do I need to continue?
I am building a home cockpit for flight simulator use, and before I
actually start putting the "panel" together, I would like to know that

I've created a simple circuit in Multisim9 (evaluation version),
(Windows XP)
with two ClockVoltage sources (digital oscillators). The first one goes
directly to an LED, the second one is fed through 6 hex inverters to

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I have an old pro 43 scanner that has been haveing issues with 2 keys.  I
cleaned the keypad but no help.  I think it needs replaced but tandy no
longer carries the part.  Is there a paint that can recoat the contacts and
restore use?