Hobby Electronics Basics

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Surge protection without grounded plugs

My son just moved into an older house near his college. We're told that the electricity isn't entirely reliable and tha...
25 comments posted 19yrs
posted by davids58
25 comments posted 19yrs posted by davids58

ELAB 080

I'm an electronics student and I'm looking for a low-cost instrument, and I need the expert advice. What do you think a...
1 comments posted 19yrs
posted by eferemail
1 comments posted 19yrs posted by eferemail

Determining Load in 3 Phase System

I'm a system engineer responsible for specifying power quantities for my systems. There are a lot of ways that are acce...
7 comments posted 19yrs
posted by MammalianFish
7 comments posted 19yrs posted by MammalianFish

Understanding the (point of) the Wheatstone Bridge

My son and I are working through some circuits from a Forrest M. Mims / Radio Shack learning lab. We got to a Wheatston...
8 comments posted 19yrs
posted by mySpamB8
8 comments posted 19yrs posted by mySpamB8

How to test capacitors in-circuit?

How do you accurately test a capacitor in the circuit? Aside from bulging packages, how do you know a capacitor has fai...
8 comments posted 19yrs
posted by blahbleh666
8 comments posted 19yrs posted by blahbleh666

computer for JVM

Hi all, For PCs and X86 architecture we have assembly language. Is it possible to have(design) a computer or a specific...
3 comments posted 19yrs
posted by Mutthuramans
3 comments posted 19yrs posted by Mutthuramans

can I interchange laptop power supplies ?

I have 2 laptops, each requiring 19 volts DC, centre pin on connecting plug is + in both cases. One supply is rated at...
2 comments posted 19yrs
posted by rthomas
2 comments posted 19yrs posted by rthomas

Comparator Substitution

I have been told that if you leave feedback off of a op amp that it will act similar to a comparator. Is this actually t...
5 comments posted 19yrs
posted by strmbrgr2
5 comments posted 19yrs posted by strmbrgr2

Sources for little coils?

I am looking for a source of little coils of maybe a few hundred turns, and around 10 mm diameter, for a hobby project...
3 comments posted 19yrs
posted by BeardedOccam
3 comments posted 19yrs posted by BeardedOccam

Nikola Tesla; Wireless Transmission of Power

Can someone who is familiar with Tesla's wireless transmission of power explain how this was to be achieved? I have a l...
6 comments posted 19yrs
posted by danbosvac
6 comments posted 19yrs posted by danbosvac

noob: Adding LED to outer casing of headphone shell

Hey there! Yesterday I bought a soldering iron and repaired an old pair of (sentimental!) headphones that have been sit...
1 comments posted 19yrs
posted by RicktheADDJ
1 comments posted 19yrs posted by RicktheADDJ

circuit too temperature sensitive

Experimenting with an proximity sensor based on the ST TDE0160. It is showing a huge temperature dependancy, if ambient...
7 comments posted 19yrs
posted by thomas
7 comments posted 19yrs posted by thomas

SMPS & TSM101

My current task is analyzing SMPS circuit with TSM 101. For that task, I'm studying the principle of SMPS. What I know...
0 comments posted 19yrs
posted by sperelat
0 comments posted 19yrs posted by sperelat