Hobby Electronics Basics

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Build my own calculator

Hi. Is it hard to build your own calculator? Now I'm not talking about something like the latest HP calculator but some...
5 comments posted 21yrs
posted by debian
5 comments posted 21yrs posted by debian

seeking construction help in DC

hey all> I am also a newbie to elctronics and would like to learn. I have not been successful in finding simpler self h...
2 comments posted 21yrs
posted by medusa569
2 comments posted 21yrs posted by medusa569

Ceramic capacitors

I have a simple question, I have to build this circuit for interacing with a soil moisture circuit. The circuit has sho...
3 comments posted 21yrs
posted by notreal
3 comments posted 21yrs posted by notreal

Fuse bits - Atmel AVR

Hi, I have LPT (ISP AVR) programmer, ( http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50915&item=7523475186&rd=...
1 comments posted 21yrs
posted by geronnimo
1 comments posted 21yrs posted by geronnimo

Disagreeable A/C Clutch

I just installed a new clutch on a 96 Mercury Sable but the clutch coil will not energize. Aside from the fuse, what co...
6 comments posted 21yrs
posted by aaawelder
6 comments posted 21yrs posted by aaawelder

12VAC to 24VAC transformer needed

I need to find a transformer (converter?) that will allow me to upconvert from 12VAC to 24VAC in order to drive a small...
9 comments posted 21yrs
posted by htewam
9 comments posted 21yrs posted by htewam

Clamp-on Ammeter question

If a clamp-on ammeter probe is clamped around both the power wires and the ground wires, shouldn't it read zero amps be...
4 comments posted 21yrs
posted by larrymoencurly
4 comments posted 21yrs posted by larrymoencurly

AC adaptor polarity

Hi I have purchased a Chess computer over the internet that requires 9v 300ma, centre positive. It is coming without an...
10 comments posted 21yrs
posted by no
10 comments posted 21yrs posted by no

Running LEDs on five volts

I want to run some LEDs on five volts from one of the USB ports on my computer. Can I just use three of them in series...
19 comments posted 21yrs
posted by neutrino1
19 comments posted 21yrs posted by neutrino1

Electron Beams for Fusion

Spread a lot of cathodes around the outside of a vacuum chamber and target a deterium anode in the center. If the cold f...
6 comments posted 21yrs
posted by BretCahill
6 comments posted 21yrs posted by BretCahill

Want to run kid's toy truck by adaptor

Truck is having 6 cells of 1.5 v general size.I connected all cell positions by fixing wire pieces in cell slots.Later...
4 comments posted 21yrs
posted by saqlain92110
4 comments posted 21yrs posted by saqlain92110

Power Strip Causing Ground Loop?

First, let me tell you that I'm a retard when it comes to electronic stuff. Anyway... I was fiddling around behind my c...
40 comments posted 21yrs
posted by howardkinsd
40 comments posted 21yrs posted by howardkinsd

How to step down 130 VDC using a LM7812?

How can I step down 130 VDC to 12 VDC using an LM 7812. As the 130 VDC battery pak loses voltage I want to maintain the...
8 comments posted 21yrs
posted by soolun
8 comments posted 21yrs posted by soolun

learn electronics

i am a newbie and i want to learn electronics i dnt have time to go to a technical college beacuse I am currently study...
6 comments posted 21yrs
posted by divineworld
6 comments posted 21yrs posted by divineworld