Hobby Electronics Basics

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How to read this mosfet datasheet parameter

Hi, i have a question about how to read this datasheet http://www.onsemi.com/pub/Collateral/BS170-D.PDF in first page i...
2 comments posted 15yrs
posted by silusilusilu
2 comments posted 15yrs posted by silusilusilu

Tinning a Soldering Iron Tip

Just beginning to learn soldering, and have gotten in the habit of tinning the tip with fresh solder. I have a Weller 4...
19 comments posted 15yrs
posted by behindontaxes
19 comments posted 15yrs posted by behindontaxes

SolderSmoke Book on Kindle

Now on Kindle: http://www.amazon.com/SolderSmoke-Adventures-Wireless-Electronics-ebook/dp/=B004V9FIVW/ref=3Dsr_1_1?ie=3...
5 comments posted 15yrs
posted by bill.meara
5 comments posted 15yrs posted by bill.meara

Simple on-off switch damages motor brushes?

I am converting a DeWalt 18 V right angle drill into a push stick for in-line skating. If I use a simple on-off switch...
13 comments posted 15yrs
posted by jdoe
13 comments posted 15yrs posted by jdoe

op-amp replacement for digital line driver?

Hi! I'm trying to source a replacement part for a board I didn't design. For some reason, a digital line driver was use...
6 comments posted 15yrs
posted by liav.koren
6 comments posted 15yrs posted by liav.koren

Why does crystal oscillator run slow?

I have an old 30KHz crystal in a big can that measures about 1.5 inch by 5/8 and hooked it up with a couple logic gates...
21 comments posted 15yrs
posted by bperryb
21 comments posted 15yrs posted by bperryb

Noise gain in TIA opamp

I=92m a bit embarrassed to be asking this question, (I thought I understood this circuit.) But I=92ve gotten myself con...
8 comments posted 15yrs
posted by gherold
8 comments posted 15yrs posted by gherold

The red flash

What can cause a green led (just a cheap 5mmx1mm through-hole led) to light-up red a few times and then fail? it was an...
13 comments posted 15yrs
posted by jasen
13 comments posted 15yrs posted by jasen

Cell Phone Brain Scan Study

The media has been making a big to-do about a study showing a correlation between cell phone use and brain activity: I...
6 comments posted 15yrs
posted by N0Spam
6 comments posted 15yrs posted by N0Spam

lm555 timer problem

I have a basic off the shelf astable timer circuit with the diode for less than 50% duty cycle thats on this page. http...
18 comments posted 15yrs
posted by cknjsp
18 comments posted 15yrs posted by cknjsp

Basic book on electronics?

Hi, My nephew in Down Under wants to get into hardware. I'd like to give him a book on basic hardware theory and practi...
7 comments posted 15yrs
posted by josef.moellers
7 comments posted 15yrs posted by josef.moellers

AD/DA and Op amp?

Hi, I have been playing with USB using Ztex's USB module. I plan to make an oscilloscope and function generator. Theref...
3 comments posted 15yrs
posted by klaine8
3 comments posted 15yrs posted by klaine8

Electrician questions

I have a service panel on the side of the house that feeds a sub panel inside. Over the years a few breakers got added...
25 comments posted 15yrs
posted by default
25 comments posted 15yrs posted by default