Hobby Electronics Basics

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[Battery] Questions

Hello, I'm not sure if I can ask this here but I'm sure someone will know I am looking at this product a an option for...
3 comments posted 20yrs
posted by honsbeek3
3 comments posted 20yrs posted by honsbeek3

How to count zeros in registers?

Hi all, reg[7:0] register; The register contains data like [0 0 0 1 0 1 0 1] And I want to know the number of the zeros...
37 comments posted 20yrs
posted by zhushenli
37 comments posted 20yrs posted by zhushenli

handheld dictionary help

I would like to build an embedded system, I have limited experience with an hc11 microcontroller, but I have good c,c++...
2 comments posted 20yrs
posted by jason
2 comments posted 20yrs posted by jason

polar vs nonpolar capacitors

I am interested in upgrading some audio components, and a lot of DIY tweak mention "replace the electrolytics in the si...
13 comments posted 20yrs
posted by dspear99ca
13 comments posted 20yrs posted by dspear99ca

Op Amp Hookup Help Please

I'm not an experienced electronics person, and so have a "stupid question". I have a device that provides an "on" signa...
3 comments posted 20yrs
posted by stanley.f.furman
3 comments posted 20yrs posted by stanley.f.furman

Residual AM and PM?

Hi all, I cannot seem to find any strong explanations for "residual AM", "residual PM", and "residual FM" in any of my...
5 comments posted 20yrs
posted by billcalley
5 comments posted 20yrs posted by billcalley

240vac xformer and tube amp

I've been in electronics a long time but it's been years since I've messed with tube stuff but I thought I "may" build...
16 comments posted 20yrs
posted by newszz10
16 comments posted 20yrs posted by newszz10

Portable Polaroid DVD - PDM-0711

My portable Polaroid DVD model PDM-0711, was working very well. After attending some film, appeared a transparent red la...
0 comments posted 20yrs
posted by secularman
0 comments posted 20yrs posted by secularman

help me in searching a good project

i has to make a project till march2006 ,i request u to please help me and guide me on my project selection i am good at...
3 comments posted 20yrs
posted by neeraj_indian007
3 comments posted 20yrs posted by neeraj_indian007

I miss the basic books

I grew up in the 60's. Back in the '50's there were books written about basic electricity by big corporations, like AT&...
11 comments posted 20yrs
posted by junker
11 comments posted 20yrs posted by junker

Pesky Christmas lights

I have a question about two Christmas star lights that go on top the Christmas tree. Each star has 11 lights and take 1...
1 comments posted 20yrs
posted by littleboyblu87
1 comments posted 20yrs posted by littleboyblu87

can computer can be made 10000times smaller

if a atom is taken as referanca to store bits as u know atom's valance shells have electrons so these electrons can beh...
1 comments posted 20yrs
posted by neeraj_indian007
1 comments posted 20yrs posted by neeraj_indian007

Desoldering: Thin layer of solder left on pads

Hi, I'm not sure if this is a problem or not. When I desolder resistors from a PCB, the desoldering wick sucks up enoug...
10 comments posted 20yrs
posted by longjohnstuartmill
10 comments posted 20yrs posted by longjohnstuartmill

direct current loss per foot of wire

I can't seem to find an answer to this question anywhere, So I've come to the experts. I need to power a device that re...
5 comments posted 20yrs
posted by servozoom
5 comments posted 20yrs posted by servozoom

Antennas-History (What's Going On?)

I hardly know where to start with this topic. If one picks up some of the fairly popular (available?) books on the matt...
10 comments posted 20yrs
posted by wolf_tracks
10 comments posted 20yrs posted by wolf_tracks