Hobby Electronics Basics

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Adapting 220VAC drop in charger for 110VAC

Hi All, I have a 220VAC drop in charger for a Motorola GP68 two-way radio. The bottom of the charger indicates 220VAC i...
4 comments posted 20yrs
posted by a7b98208
4 comments posted 20yrs posted by a7b98208

Voltage Regulator

Hi. I am trying to find the best way to take 72VDC and turn it into 60VDC (100W max). At first I thought a simple resis...
8 comments posted 20yrs
posted by metalimi
8 comments posted 20yrs posted by metalimi

safe to use a different charger?

Hi all, forgive me if this is a ridiculous question. I'm really not sure if electricity isn't just a fancy word for mag...
6 comments posted 20yrs
posted by twarren
6 comments posted 20yrs posted by twarren

what Hakko tutorial kits

2006-05-10T08:08:50Z Does anyone know about these two specific electronic kits from the Hakko soldering tutorial, perha...
0 comments posted 20yrs
posted by nobody
0 comments posted 20yrs posted by nobody

Problem with buzzers

I am trying to help my son with a basic electronic problem. He has a school project to complete where he has to constru...
10 comments posted 20yrs
posted by sueh
10 comments posted 20yrs posted by sueh

differential signal current return

Hi all! I'm pleased to join you in this furom. My question is quiet basic, really- In differentiall signaling communica...
6 comments posted 20yrs
posted by ran.levi
6 comments posted 20yrs posted by ran.levi

Voltage shedding question

Hi all, I have a simple question on a power supply I'm working on in order mostly to learn how to design simple power s...
25 comments posted 20yrs
posted by torbenwilson
25 comments posted 20yrs posted by torbenwilson

Load/Source Impedance

I am still having a hard time understanding Load and Source impedance. When someone says you need a low ouput Impedance...
20 comments posted 20yrs
posted by uriahsky
20 comments posted 20yrs posted by uriahsky

multipath effects dealt with in modulation

does any 1 knows, how multipath effects are dealt with in single carrier modulation (64-QAM), COFDM and direct sequence...
1 comments posted 20yrs
posted by praviendre
1 comments posted 20yrs posted by praviendre

RS-232 Rf module

hi, I am working on an FPGA project. It is a CDMA-based point-to-point communication system; two FPGAs each works as a...
1 comments posted 20yrs
posted by aymmmm
1 comments posted 20yrs posted by aymmmm

Time to Abolish ICs

Think of all the fun you'll have constructing circuits from scratch!
10 comments posted 20yrs
posted by brightice2001
10 comments posted 20yrs posted by brightice2001

What type of capacitor do I need?

I have a basic IC ciruit that calls for a 0.1uF cap. This cap will work off a 3.3V supply, so I'm guessing this is some...
3 comments posted 20yrs
posted by yan
3 comments posted 20yrs posted by yan

Vacuum Cleaner Power Take Off

Can any one advise me where I can find a circuit diagram for the power take off sockets as fitted to some vacuum cleane...
9 comments posted 20yrs
posted by feathers455
9 comments posted 20yrs posted by feathers455

telephone connection

i have connected(extension) a telephone in parrallel to my available connection so that i could be able be able to acce...
2 comments posted 20yrs
posted by pradheep.sh
2 comments posted 20yrs posted by pradheep.sh

current measurement

how can we measure the current flowing in a circuit without using ammeter can we have to use a voltage to current conver...
21 comments posted 20yrs
posted by pradheep.sh
21 comments posted 20yrs posted by pradheep.sh