Hobby Electronics Basics

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Can I connect an LED to an RS232 port?

Hi, I'd like to turn an LED on and off by controlling the CD (carrier detect) line of an RS232 port. I understand that...
9 comments posted 20yrs
posted by johnfofawn
9 comments posted 20yrs posted by johnfofawn

can I make my garden solar lights bline

If I replace the led lights with blinking lights can I make my solar garden spotlight blink
3 comments posted 20yrs
posted by linda_carol52
3 comments posted 20yrs posted by linda_carol52

Cold Plasma Speakers

Hi: Where can I find info on cold plasma speakers? Thanks, Radium
30 comments posted 20yrs
posted by glucegen1
30 comments posted 20yrs posted by glucegen1

Scope GPIB stuff

I have a Gould OS4020 digital storage scope which is fitted with a GPIB interface. I also have a 'Brain Boxes' brand GP...
7 comments posted 20yrs
posted by a
7 comments posted 20yrs posted by a

Question about re-charging batteries

For those of you who may remember me, I am the person with the scooter that operates using two 12 volt lead, acid-free...
2 comments posted 20yrs
posted by mea305
2 comments posted 20yrs posted by mea305

Two Networked Computers Go Down Together

I have two computers networked with MS network features. One runs W2000 and the other XP Pro. Recently, both have died...
0 comments posted 20yrs
posted by wolf_tracks
0 comments posted 20yrs posted by wolf_tracks

small ir remote control question

i know that the remote control of one tv will not work on the other tv model. but i just dont know what it makes not to...
3 comments posted 20yrs
posted by nithinmulley
3 comments posted 20yrs posted by nithinmulley

Question about CMOS outputs

Looking at the spec sheet for the TLC555 CMOS timer I see the output source current is rated at around 10mA. Hooking it...
3 comments posted 20yrs
posted by wrongaddress
3 comments posted 20yrs posted by wrongaddress

How to pick the right transistor?

I have been trying to read up on formulas for selecting transistors. I am a bit math impaired, but not too badly. I am...
13 comments posted 20yrs
posted by JedOs86
13 comments posted 20yrs posted by JedOs86

power outlet shapes

Not meaning purposely to ask silly questions, but is there an engineering rationale for the wall outlet shapes (for ele...
9 comments posted 20yrs
posted by j_joensuu
9 comments posted 20yrs posted by j_joensuu

Lead pitch?

Hi all, I tried to find the definition for Lead Pitch (talking about Capacitor). I don't understand what this term means...
10 comments posted 20yrs
posted by quanghoc
10 comments posted 20yrs posted by quanghoc

testring

thwwi
1 comments posted 20yrs
posted by steve,balstone
1 comments posted 20yrs posted by steve,balstone

hi test

please ignore
2 comments posted 20yrs
posted by stevbals
2 comments posted 20yrs posted by stevbals