Hobby Electronics Basics

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Transistor question

In the schematic on this page, http://www.freeinfosociety.com/electronics/schematics/powersupply/pictures/555ignitionco...
6 comments posted 20yrs
posted by ngdbud
6 comments posted 20yrs posted by ngdbud

Proper group for heatsink question?

I have a design project that is nearing the build and test phase. I need some info re. thermal compounds for attaching...
28 comments posted 20yrs
posted by wallace.k
28 comments posted 20yrs posted by wallace.k

Microstrip antenna with heterogeneous dielectrica

Hi, I'd need some help with the calculation and simulation of a rectangular microstrip antenna. The question is rather...
5 comments posted 20yrs
posted by christoph.hoerterer
5 comments posted 20yrs posted by christoph.hoerterer

soldering tool question

Hi, I'm an ME who does occasional RC and robotics projects at home, for fun and/or with my kids, so my electrical work/...
13 comments posted 20yrs
posted by wallace.k
13 comments posted 20yrs posted by wallace.k

Lead Acid Battery in parallel

Hi all, Why do manufacturer specify number of battery that can be shunted together, so as to increase the AH rating?? Is...
7 comments posted 20yrs
posted by nospam4u_jack
7 comments posted 20yrs posted by nospam4u_jack

Trouble with monitor

Hi Guys Is anyone in this group knowledgeable about computer Monitors. If so I have a question. I have a 4 1\\2 year ol...
10 comments posted 20yrs
posted by rickj
10 comments posted 20yrs posted by rickj

Building static phase converter?

We have two right now that we use on our 3 phase motors. One of them was damaged(The cap exploded) and the boss when he...
6 comments posted 20yrs
posted by clannorm
6 comments posted 20yrs posted by clannorm

Help with a project

Hello, I want to start a new project, but I don't know where to begin. I need to arrange 360 buttons or switches that c...
15 comments posted 20yrs
posted by Kerry.DonnyClark
15 comments posted 20yrs posted by Kerry.DonnyClark

My Stove

I'm new to electronics/electricity, and I've been reading up on ohm's law, and trying to get a feeling for how current,...
10 comments posted 20yrs
posted by jamie
10 comments posted 20yrs posted by jamie

Auto Hobbyist DAQ setup?

I'm thinking about making a laptop-based DAQ system for monitoring the behavior of some systems on my car. The point is...
2 comments posted 20yrs
posted by dgeesamannospam
2 comments posted 20yrs posted by dgeesamannospam

electrical interface problem

Hi there, I'm currently working on a board design and I have to interface two VLSI chips to each other that don't have...
35 comments posted 20yrs
posted by quinn_the_esquimo
35 comments posted 20yrs posted by quinn_the_esquimo

Timing Diagrams

Happy Holidays! Where can I find info on timing diagrams? I would like to learn them because I am trying to learn PIC p...
12 comments posted 20yrs
posted by bigschlong
12 comments posted 20yrs posted by bigschlong

Light blue resistors with 5 band codes?

Hi everyone, What are the light blue resistors? Metal film maybe? I have some with bands: Brown - Green - Black - Red -...
17 comments posted 20yrs
posted by royalmp2001
17 comments posted 20yrs posted by royalmp2001

Wart you lost your PR website!

I dont have time to try and change this man. He obviously will not change and people do not care. I cant prove he raped...
4 comments posted 20yrs
posted by johnw94020a
4 comments posted 20yrs posted by johnw94020a