Hobby Electronics Basics

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Basic multimeter question

Hi, I'm new here and just now I got myself confused.... and am ashamed off it!! ;-) When I measure the resistance of a...
6 comments posted 22yrs
posted by news underscore ( _ ) guido at
6 comments posted 22yrs posted by news underscore ( _ ) guido at

help with idea for power electronics

We need to do an assignment for one of our subjects Power Electronics. I have got no idea what to do this on. Examples...
5 comments posted 22yrs
posted by pil
5 comments posted 22yrs posted by pil

Sound card input impendence

Hi all, I'm using my sound card for data acquisition. It is inbuilt on my Intel 845GL motherboard, named Avance AC97 Au...
1 comments posted 22yrs
posted by animesh_m
1 comments posted 22yrs posted by animesh_m

Question about off the self "Plasma Globes"

The other day I was at the local thrift store and found in the electronic stuff the base unit for a plasma globe. I got...
3 comments posted 22yrs
posted by Barryufp
3 comments posted 22yrs posted by Barryufp

Problems with a serial devi

Hi all, I have a device that works linked to the serial port of a PC. Throw this serial port some commands are sent to...
1 comments posted 22yrs
posted by saident
1 comments posted 22yrs posted by saident

110 -> 240 step down converter

apologies if this is the wrong group for this question. i live in australia and i'm looking to import a soundcard from...
10 comments posted 22yrs
posted by me
10 comments posted 22yrs posted by me

thermocouples: 0mv at 0C

Whey do all types of thermocouples output 0mv at 0C? ...was that a design requirement when the T/C alloys were developed...
2 comments posted 22yrs
posted by none
2 comments posted 22yrs posted by none

DSC 832 alarm system programming ?

I am looking for the ftp site to get the DLS2002 downloading software .. I am currently using version 1.3 but would like...
1 comments posted 22yrs
posted by nospam4me
1 comments posted 22yrs posted by nospam4me

ASCII Circuits

Hi Newsgroup, I'm the author from AACircuit (Andy's ASCII Circuit) and 3 years ago, I released the first version of it(...
26 comments posted 22yrs
posted by spam
26 comments posted 22yrs posted by spam

Tools for measuring ac power interrupt ?

What tool is required for measuring short ac power interrupt ? I mean the interrupt that is short that only causes the...
2 comments posted 22yrs
posted by johnjohn9191
2 comments posted 22yrs posted by johnjohn9191

Difference between LED and laser diode?

Hi Could anyone tell me the difference between a LED and a laser diode. I know that LEDs produce light via spontaneous...
4 comments posted 22yrs
posted by mike_uk31415
4 comments posted 22yrs posted by mike_uk31415

LED from dynamo

Hi, Ive just got a front-hub dynamo for my bike. I want to hook up some white leds on the front and some reds on the ba...
2 comments posted 22yrs
posted by lanceh
2 comments posted 22yrs posted by lanceh

How to amplify voltage?

I have 5V DC, 0.5mA, how do I amplify this voltage to 20V DC or whatever voltage level I want? Is this something that i...
13 comments posted 22yrs
posted by zalzonishappy
13 comments posted 22yrs posted by zalzonishappy

Op-amps and Transistors

Without long explainations, is it fair to say : 1) A transistor uses change in voltage to control a large flow of curre...
41 comments posted 22yrs
posted by zalzonishappy
41 comments posted 22yrs posted by zalzonishappy