Hobby Electronics Basics

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Best way to ensure signal does not exceed 5v?

I'm the "software guy" but am trying to help out on the hardware side for a small project we have going on. It's fun, I...
53 comments posted 15yrs
posted by steveklett
53 comments posted 15yrs posted by steveklett

LM386 power amp IC question

I found an old LM386 chip in one of my piles of junk, and I'm thinking of putting it into use. All the schematics in th...
20 comments posted 15yrs
posted by kaz
20 comments posted 15yrs posted by kaz

Getting rid of Adobe message at boot-up

Every time I boot up, I get a msg that my Adobe Acrobat Pro v8 has new updates. How do I get rid of the message?
7 comments posted 15yrs
posted by wolftracks
7 comments posted 15yrs posted by wolftracks

Odd behavior of Thunderbird

It's pretty clear that each time I boot up my PC or logoff/on that any recent NG subscriptions or address book entries d...
3 comments posted 15yrs
posted by wolftracks
3 comments posted 15yrs posted by wolftracks

Need to confirm resistor selection

I don't like to start a post with a disclaimer, but in this case I must; I am a programmer, not a EE or hardware guy. H...
5 comments posted 15yrs
posted by steveklett
5 comments posted 15yrs posted by steveklett

Not sure what adapter to use

I have three sets of computer speakers that have no adapters. I'm trying to determine what kind of adapter I can use as...
6 comments posted 15yrs
posted by littleboyblu87
6 comments posted 15yrs posted by littleboyblu87

class B (or is it AB?) design mods

Found a circuit: http://openbookproject.net//electricCircuits/Exper/EXP_6.html#xtocid158349 What parts would have to ch...
3 comments posted 15yrs
posted by recoveringmadman
3 comments posted 15yrs posted by recoveringmadman

Question about JFETs

I noticed the JFET input impedance at the gate appears to change as the resistance in the drain connection changes. If...
6 comments posted 15yrs
posted by bperryb
6 comments posted 15yrs posted by bperryb

Higher wattage for a resistor ever bad?

When I come across a burnt resistor, I usually replace it with one rated for twice the wattage as the original, but I w...
41 comments posted 15yrs
posted by larrymoencurly
41 comments posted 15yrs posted by larrymoencurly

Increasing AC frequency

Guys: I'm looking at an application where it would be advantageous to have an AC mains frequency of around 500 Hz (120...
13 comments posted 15yrs
posted by eromlignod
13 comments posted 15yrs posted by eromlignod

technology limitation

Does technology not fatal to us?
7 comments posted 15yrs
posted by nitin333takur
7 comments posted 15yrs posted by nitin333takur

OT: Apple *really* cares

I see that Apple is maintaining four TCP connections through my wireless router to my iPad, which has been doing nothin...
12 comments posted 15yrs
posted by Winston
12 comments posted 15yrs posted by Winston

Stereo to 2-channel mono question

I posted this last week in sci.electronics.design but got no responses. Probably it's too basic. Anyway... I'd like to...
9 comments posted 15yrs
posted by nomail
9 comments posted 15yrs posted by nomail

why power adapters all over-voltage?

I have accumulated many power adapters: from modems, cordless phones, scanners, Christmas lights and so on. A few were...
28 comments posted 15yrs
posted by ex-privat
28 comments posted 15yrs posted by ex-privat