Hobby Electronics Basics

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What type of screw ?

What is the diffrence between a Thread forming screw use on plastic and metal ? I can't tell them apart . Can anyone , p...
3 comments posted 15yrs
posted by mowhoong
3 comments posted 15yrs posted by mowhoong

How to record voltage spikes?

We use an inverter to make three phase power from single phase in the shop. The inverter has been working quite well, a...
4 comments posted 15yrs
posted by etpm
4 comments posted 15yrs posted by etpm

Simple Laser Diode APC circuit

APC...Automatic Power Control Lots of complex hoo-ha out there for this. I'm trying to simplify, using the LM317 since...
2 comments posted 15yrs
posted by MyNameForward
2 comments posted 15yrs posted by MyNameForward

Fuse: fast blown vs slow blown

How dangerous is it to replace a 500mA fast-brown fuse with a 500mA slow-brown one? -- @~@ Might, Courage, Vision, SINC...
66 comments posted 15yrs
posted by toylet.toylet
66 comments posted 15yrs posted by toylet.toylet

GFCI--Red LED stays on

Subject. Neither pressing the test or reset button turns the LED off. Neither really depresses. It's a single line with...
22 comments posted 15yrs
posted by wolftracks
22 comments posted 15yrs posted by wolftracks

How it works: Electric spark of the ligthers

Anyone know how it works, how it's created that spark found on the lighters, cigarette lighter and on the stove ligthter...
13 comments posted 15yrs
posted by tobiasgadelha
13 comments posted 15yrs posted by tobiasgadelha

Soldering Copper to Phosphor Bronze

Does anyone know if soldering copper wire to Phosphor-Bronze make a solid and reliable electrical connection? Would it...
8 comments posted 15yrs
posted by Searcher7
8 comments posted 15yrs posted by Searcher7

Dual Electronically Controlled ABS Systems

First the the Dodge minivan ABS fiasco and now the runaway Toyota fiasco. At first glance it seems like a backup brake...
1 comments posted 15yrs
posted by BretCahill
1 comments posted 15yrs posted by BretCahill

Compact Fluorescent Bulbs Shock When Unplugged

I got a shock from a compact fluorescent light bulb when it was unplugged. The lamp fell to the floor and broke. I unpl...
44 comments posted 15yrs
posted by alanfolmsbee
44 comments posted 15yrs posted by alanfolmsbee

Digital Ballasts

Eclipse LED Digital ballasts are more efficient, quieter, cooler, and softer on the bulb. LED bulbs last up to 10 times...
1 comments posted 15yrs
posted by samaden11
1 comments posted 15yrs posted by samaden11

Pocket scope

Sometimes the multimeter just does not provide enough information, while the bench scope is too cumbersome to move arou...
16 comments posted 15yrs
posted by fake
16 comments posted 15yrs posted by fake

Wet brushless ESC goes up in smoke

I am flying a R/C seaplane powered by two brushless DC motors. One of the motor controllers went up in smoke, apparentl...
37 comments posted 15yrs
posted by fake
37 comments posted 15yrs posted by fake

Help ID MOSFET driver chip

I want to repair a speed controller for a brushless DC motor. The MOSFETs are burned out, and so is this little chip, w...
3 comments posted 15yrs
posted by fake
3 comments posted 15yrs posted by fake

counter

hello, i need 4 bit binary counter with load feature. can anyone has a suggestion for me?
3 comments posted 15yrs
posted by mehmetemineruk
3 comments posted 15yrs posted by mehmetemineruk

Help IDing colors on part

Hi guys, I need some help enlarging this picture of a circuit board to ID the resistor running horizontal, just to the...
46 comments posted 15yrs
posted by amdx
46 comments posted 15yrs posted by amdx