Hobby Electronics Basics

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Transformer Sizing / Rating

My project requires operation of a single relay to control mainly resistive loads up to 5amps ac @ 230v. The main proje...
8 comments posted 20yrs
posted by ian
8 comments posted 20yrs posted by ian

Is Information an Important Science?

- Because software is a descriptive model, as well as a testable prediction, you can test your theories straight away,...
59 comments posted 20yrs
posted by darwinist
59 comments posted 20yrs posted by darwinist

Circuit Power Consumption

Hello! A few questions if I may. I realize this is probably basic Ohm's Law stuff, but I want to double check with some...
13 comments posted 20yrs
posted by blahbleh666
13 comments posted 20yrs posted by blahbleh666

Building a Faraday's cage ?

Hi :) I have a small bedroom recording studio full of electromagnetic fields (mainly 50hz+harmonics up to ~3,5khz from...
123 comments posted 20yrs
posted by address
123 comments posted 20yrs posted by address

Low drop regulators

Hi, I'm wondering what are the principles used in low drop regulators. I 'm trying to make one using standard component...
2 comments posted 20yrs
posted by news
2 comments posted 20yrs posted by news

extension cord questions

Greetings All, Let's say I have two extension cords, both 50 feet long. I need to use both to reach a device that is 90...
4 comments posted 20yrs
posted by etpm
4 comments posted 20yrs posted by etpm

DIY 1KW grid tie?

Assuming I had a 1KW isolation transformer, and a hypothetical inverter that was programmable and synchronizable, could...
26 comments posted 20yrs
posted by bobgardner
26 comments posted 20yrs posted by bobgardner

oscillator

Hello, The 555 timer has a maximum frequency of 1MHz. I would like to know if there is another chip that can go up to i...
11 comments posted 20yrs
posted by lera
11 comments posted 20yrs posted by lera

diode arrays

Looking for a diode array chip with several diodes I can connect in series. Actually need a series of about ten diodes....
2 comments posted 20yrs
posted by kellrobinson
2 comments posted 20yrs posted by kellrobinson

Electrolysis for dummies

This is a very basic question but I'd like to fully understand what's happening.....but then I know nothing about chemi...
24 comments posted 20yrs
posted by newszz10
24 comments posted 20yrs posted by newszz10

2-prong electrical devices

Can 2-prong electrical devices always be plugged into an outlet either way? If so, why is this?
16 comments posted 20yrs
posted by mike7411
16 comments posted 20yrs posted by mike7411

Question about ammeters

Is there a special name for ammeters that read in both directions such as from -1000 to 1000 mA? I tried searching on k...
3 comments posted 20yrs
posted by Hors
3 comments posted 20yrs posted by Hors

Quick question

I'm trying to make an adapter between a parallel port and a device used in psych experiments. The port on the device is...
3 comments posted 20yrs
posted by daenris
3 comments posted 20yrs posted by daenris

generating pulse

I need about 5% duty cycle pulse of about 1 sec time period. A second pulse required should be of same characteristics...
3 comments posted 20yrs
posted by prateekprashar2003
3 comments posted 20yrs posted by prateekprashar2003