Hobby Electronics Basics

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chargers burned out?

Hi I just bought a cellular (windows pocket pc) and a bluetooth from Asia. I live in CYprus , EU (voltage is 240) I plu...
49 comments posted 20yrs
posted by interuser
49 comments posted 20yrs posted by interuser

SMPS Inductor saturates?

I'm building a small Boost regulator using an inductor, transistor switch, diode and filter cap, but I cannot get enoug...
13 comments posted 20yrs
posted by wrongaddress
13 comments posted 20yrs posted by wrongaddress

Identifying chips?

I've come across this problem several times. There is a chip with no name of the manufacturer and just #s. So how do I f...
5 comments posted 20yrs
posted by clannorm
5 comments posted 20yrs posted by clannorm

Package/Case Values

What is the different between Package and Case? Is it the same thing. I found a list of values for Package/Case (capaci...
0 comments posted 20yrs
posted by quanghoc
0 comments posted 20yrs posted by quanghoc

modulation

does r/f input ,audio input willmake modulation?whati s the range of r/f input?
5 comments posted 20yrs
posted by gopal_219
5 comments posted 20yrs posted by gopal_219

New technologies in F1

If you are interrested for new technologies in F1 please visit: http://www.f1-zeropoint.com/ http://all-of-f1.blogsome.c...
3 comments posted 20yrs
posted by pekssvtss
3 comments posted 20yrs posted by pekssvtss

igniter/starter for HID lamps

Copper ballast 240V tap 220V tap line _________ +-------------+UUUUUUUUU+---------++ + + | | | | | | | | + | --+--- | |...
1 comments posted 20yrs
posted by kfel
1 comments posted 20yrs posted by kfel

Wire Wrapping Questions

I have some questions about wire wrapping: A) Can someone direct me to a web page or book that shows photos on how to w...
35 comments posted 20yrs
posted by redbrickhat
35 comments posted 20yrs posted by redbrickhat

Can a shock from an electric eel burn?

Hi: Can the electric shock caused by contact with an electric eel raise the temperature of the victim's skin/flesh suffi...
12 comments posted 20yrs
posted by glucegen1
12 comments posted 20yrs posted by glucegen1

Voltage multiplier

Does a voltage multiplier always require AC or pulsed DC to run it? Are there any types that will multiply unpulsed DC?...
7 comments posted 20yrs
posted by dewhurst
7 comments posted 20yrs posted by dewhurst

PC speaker hum

> "Eeyore" > > > > > > > Neil Green wrote: > > > >> This may be the wrong group but I figure > >> electronics > >> is k...
3 comments posted 20yrs
posted by rabbitsfriendsandrelations
3 comments posted 20yrs posted by rabbitsfriendsandrelations

Question on cell phone stuff

How could I detect the presence of a nearby cell phone? I'm assuming most are sending out a query pulse every milliseco...
1 comments posted 20yrs
posted by Waynelund
1 comments posted 20yrs posted by Waynelund

Is 12V power source OK?

My Garmin GPS runs either on six AA batteries or a plug-in to a car's cigarette lighter. Rather than unning down the Ni...
0 comments posted 20yrs
posted by pixsnap
0 comments posted 20yrs posted by pixsnap