Hobby Electronics Basics

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Illumination mcd for flashlight bulbs ?

Anyone know, or point me towards the light output, preferably in mcd's, for normal flashlight bulbs, P9 base, or screw,...
2 comments posted 21yrs
posted by gef
2 comments posted 21yrs posted by gef

Bubble Etcher

Hi, Just in case some people here may be wondering how to speed up the etching process for PCB's, one way to do it is t...
6 comments posted 21yrs
posted by rdavies
6 comments posted 21yrs posted by rdavies

On Screen Displays with TV's

Does anyone know how an On Screen Display works? For example, comcast digital cable. How are text, menus, and graphics d...
2 comments posted 21yrs
posted by dvsdvl
2 comments posted 21yrs posted by dvsdvl

Duty Cycle test on DMM?

My DMM has a scale to measure Duty Cycle %. Exactly what is that measuring? L
10 comments posted 21yrs
posted by lumpy
10 comments posted 21yrs posted by lumpy

PSpice help needed

I've started using PSpice as part homebrewing and design efforts. It is very interesting, and a great way to check out...
3 comments posted 21yrs
posted by meara.london
3 comments posted 21yrs posted by meara.london

clock generator and synthesizer

Hello All Anyone can technically explain the differences between a clock generator and clock synthesizer? I want to do...
5 comments posted 21yrs
posted by cheanglong
5 comments posted 21yrs posted by cheanglong

battery

Hello All For a 1.5V battery, what is the potential voltage at the positive terminal and negative terminal of battery? I...
3 comments posted 21yrs
posted by cheanglong
3 comments posted 21yrs posted by cheanglong

AGP 8x + PCI-E 16x question

AGP 8x runs at 66Mhz * 8 = 533MHz PCI-E 16x runs at 100MHz * 16 = 1600MHz Am I on the right track? Please forgive if thi...
0 comments posted 21yrs
posted by jl
0 comments posted 21yrs posted by jl

Robotics

Anyone here build robots for fun? Rod
1 comments posted 21yrs
posted by rdavies
1 comments posted 21yrs posted by rdavies

Is this the right way to charge a battery?

My brother got a Vectron ultralite made by Air Hogs. the battery is a 6v 100mah nimh, the cherger used is a 13v 600ma t...
16 comments posted 21yrs
posted by ngdbud
16 comments posted 21yrs posted by ngdbud

switching circuit with multiple power sources

I have three digital cameras on which I need to remotely trigger the shutters simultaneously. Triggering a single shutt...
8 comments posted 21yrs
posted by jalex
8 comments posted 21yrs posted by jalex

SiC Mosfet

Is there any new work going on developing SiC mosfet? Please help me in finding any reaserch work avilable on the field.
0 comments posted 21yrs
posted by atul.ee
0 comments posted 21yrs posted by atul.ee

Help to copy PAL16 / GAL16 / GAL20 ICs

I'm currently working on a project to "clone" some old computer boards I have. The companies are long since out of busi...
14 comments posted 21yrs
posted by apl2research
14 comments posted 21yrs posted by apl2research