Hobby Electronics Basics

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external CD player wall wart

I have an ancient IBM laptop. I also have a serial remote CDROM drive. But, I don't have a pwr sply for the CD drive. I...
3 comments posted 19yrs
posted by notbob
3 comments posted 19yrs posted by notbob

House meter question

I noticed if you hammer a pipe into the earth ,,say in your yard,,and connect a wire to that,,and use that as the negat...
5 comments posted 19yrs
posted by jennings7487
5 comments posted 19yrs posted by jennings7487

12v auto pump from 110v?

Can a 12v windshield wiper pump be run from a wall wart? I am putting together a mist system for a terrarium, so it wil...
40 comments posted 19yrs
posted by lildog
40 comments posted 19yrs posted by lildog

Adapter from 6-pin video to RCA composite video

I have a problem with 6-pin video cable used on Leadtek Winfast 2000XP TV card. So, if any of you with experience in th...
0 comments posted 19yrs
posted by tjurkic
0 comments posted 19yrs posted by tjurkic

How to get hFE value?

Hi, I made a sample circuit and I want to calculate the value of hFE. How can I get the value. I know hFE=Ic/Ib and Ib...
6 comments posted 19yrs
posted by junkimail
6 comments posted 19yrs posted by junkimail

On hold telephone message circuit

Is there a way to play a wav file over an open telephone line? Can the earphone output of a sound card be used? Would it...
2 comments posted 19yrs
posted by alchemcj
2 comments posted 19yrs posted by alchemcj

FM stereo transmitter?

Here's the scenario: I'd like to be able to play an audiobook on my living room stereo where my wife would be listening...
7 comments posted 19yrs
posted by NoSpam
7 comments posted 19yrs posted by NoSpam

About various levels of spice models

Hello, My question is regarding an ac small signal equivalent circuit and spice models (level3, BSIM etc). The complete...
0 comments posted 19yrs
posted by almitra.pradhan
0 comments posted 19yrs posted by almitra.pradhan

Question on transfer function equation

Hi again! I was reading the following link: http://focus.ti.com/lit/ml/sloa088/sloa088.pdf In page 16-12 (Figure 16-12)...
5 comments posted 19yrs
posted by mr.whatever
5 comments posted 19yrs posted by mr.whatever

CMOS CAMERA

Hi, I am looking for a CMOS camera with USB output or some other digital interface that I can directly interface to a FP...
2 comments posted 19yrs
posted by conphiloso
2 comments posted 19yrs posted by conphiloso

Electronic Circuits Simulation Websites?

Does anyone know of any good websites that simulate simple circuits? I'm specifically looking for a website that will a...
3 comments posted 19yrs
posted by pbeens
3 comments posted 19yrs posted by pbeens

NAMASKAAR

NAMASKAAR, I want to knoe the completer working of self bias transistor. 1.what is the use of the resistors R1, R2, Re,...
1 comments posted 19yrs
posted by 87.charan
1 comments posted 19yrs posted by 87.charan

limiting amperage

Hello all. I have an electronic device that runs on twelve volt, and I would like to limit the amount of amperage it ca...
9 comments posted 19yrs
posted by jcwhitty
9 comments posted 19yrs posted by jcwhitty