Hobby Electronics Basics

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current limiter circuit

hi, I need a series current limiter circuit. the characteristic which I need is that circuit has very low resistance an...
10 comments posted 15yrs
posted by hamze60
10 comments posted 15yrs posted by hamze60

Exploding Capacitors

Can voltage that is too low or transient spikes cause a capacitor to explode? I'm not talking about capacitors that hav...
12 comments posted 15yrs
posted by Searcher7
12 comments posted 15yrs posted by Searcher7

Milenko Kindl on electronics

Following a lot of requests from newcomers I have provided a separate page called "starting out in basic electronics"....
4 comments posted 15yrs
posted by ffsdfs
4 comments posted 15yrs posted by ffsdfs

Newbie LED question

I am trying to put together a decorative project that will have four LEDs in it (http://www.mouser.com/ProductDetail/Se...
10 comments posted 15yrs
posted by N
10 comments posted 15yrs posted by N

Counter ICs

MC14017B http://www.onsemi.com/pub_link/Collateral/MC14017B-D.PDF I've just begun to look at digital electronics, and o...
68 comments posted 15yrs
posted by none
68 comments posted 15yrs posted by none

Making Do With Less Data

If you wanted to make an image you could simply omit or average every other pixel. Is there a short list on the most pop...
22 comments posted 15yrs
posted by Bret_E_Cahill
22 comments posted 15yrs posted by Bret_E_Cahill

Trying to Find Class 1 Laser Diode

I need to make a laser pointer for a profoundly disabled friend. It needs only to point 3 inches so I'm looking for a C...
20 comments posted 15yrs
posted by bonnypatty
20 comments posted 15yrs posted by bonnypatty

Best connector for AF square waves?

Gentlemen: I have a number of shielded, single-center-wire, small-gauge (.100" OD) cables that are transmitting square...
9 comments posted 15yrs
posted by eromlignod
9 comments posted 15yrs posted by eromlignod

Nice LTspice tutorial

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 A nicely put together tutorial for a very helpful tool: http://denethor.w...
1 comments posted 15yrs
posted by C
1 comments posted 15yrs posted by C

Resistance of switch component (SW) in LTspice?

How do I define the resistance of the SW (switch) component in the LTspice library? Apparently it's 1 ohm, and I'm tryin...
3 comments posted 15yrs
posted by bperryb
3 comments posted 15yrs posted by bperryb

relay that stays closed until power removed?

Hell, I'm not familiar with all the basic electronic component names; I'm just learning, and need some help please. I w...
15 comments posted 15yrs
posted by me
15 comments posted 15yrs posted by me

DIY amplifier+loudspeaker

I only need a very very basic speaker, powered maybe by AA batteries, that amplifies the 3.5mm audio output from the iP...
10 comments posted 15yrs
posted by toylet.toylet
10 comments posted 15yrs posted by toylet.toylet

solar powered motor

I'm a newbie with electronics, but I am looking at powering a 12V 4A fan with an 85W solar panel like this one: http://...
13 comments posted 15yrs
posted by jmcculloch
13 comments posted 15yrs posted by jmcculloch