Hobby Electronics Basics

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Electronics Expos

I have been searching the web looking for any events for electronics hobbyists. A show/expo that showcases the latest i...
2 comments posted 22yrs
posted by djbcoffee
2 comments posted 22yrs posted by djbcoffee

how to get more amps to my lamps?

I have a series of mini-bulbs (#44 lamps, like the kind used in pinball machines) underneath a platform in my project....
10 comments posted 22yrs
posted by alex1138
10 comments posted 22yrs posted by alex1138

The secrets of shot noise

Help! Shot noise, as stated in Horowitz&Hill, ch7.11, p.432, shows a noise current of Inoise(rms) = sqrt(2*q*Idc*B) wit...
10 comments posted 22yrs
posted by Christian.Rausch
10 comments posted 22yrs posted by Christian.Rausch

unknown display's

Hi all! I would like some information about a couple of display's I've found. I've searched google and I suspect them t...
0 comments posted 22yrs
posted by olafdonk
0 comments posted 22yrs posted by olafdonk

Power Amplified Speakers from PC Power Supply

Greetings! I'd like to power my external PC speakers with my computer instead of using the bulky AC wall transformer/ad...
4 comments posted 22yrs
posted by crazy_whizzo
4 comments posted 22yrs posted by crazy_whizzo

What's changed in CRT display in the last decade?

X-No-Archive: Yes I know things are ALWAYS changing for the computer itself, but I figure television /CRT technology is...
3 comments posted 22yrs
posted by dude17
3 comments posted 22yrs posted by dude17

artist needs help- difficult mic circuit

Before I begin I should say that we are pretty familiar with most basic electronics but are really stumped here. What w...
3 comments posted 22yrs
posted by eots
3 comments posted 22yrs posted by eots

Reccomendation on an introduction to EE Textbook

I've been interested in learning about electrical engineering for some time now. I know a little bit about the basics f...
1 comments posted 22yrs
posted by trizor
1 comments posted 22yrs posted by trizor

1200mA Power supply and 12Ah battery

Hi, I have a mini LCD TV screen which requires a power supply of 12v - 1200mA. I would like to power the device using a...
6 comments posted 22yrs
posted by
6 comments posted 22yrs posted by

Sealed Lead Batteries

Hi folks I plan to use two Yuasa NPO.8-12 12v 0.8Ah gelcells for portable radio amateur rig.. I will use them in France...
3 comments posted 22yrs
posted by pierred1
3 comments posted 22yrs posted by pierred1

Anyone have pinout of 74118?

Talk about a hard-to-find chip! We're trying to find the pinouts of this TTL chip made by Texas Instruments: SN74118. A...
3 comments posted 22yrs
posted by mccullar
3 comments posted 22yrs posted by mccullar