Online electronics training?

[PlainBill]

I've noticed a problem. Some of the people trying to repair monitors have little or no training in electronics. Now I'll be the first to admit that not much basic electronics knowledge is involved in fixing a monitor when the problem was a bunch of Elite caps that died. Still, a basic knowledge would go a long way for the more involved problems.

Does anone know of any online 'Elementary Electronics' (or even 'The Dummies guide to Electronics') sites?

PlainBill

[golemmaster]

Re: Online electronics training?

Some of these are "for dummies" some are not. I consider myself a dummy.
Some have information and self-teaching info. Some are just nice to browse through.

I like:
http://www.kpsec.freeuk.com/index.htm

Also:
http://www.elna-america.com/tech_al_principles.php

http://www.wjoe.com/technotes.htm

http://www.micro-ohm.com/colorcode/rescolor.html

http://www.electronicrepairguide.com...or-repair.html

http://www.lcdrepair.us/index.html

http://www.scribd.com/doc/9504348/Capacitor-Tutorial

http://www.bcae1.com/

http://www.allaboutcircuits.com/vol_3/chpt_7/6.html

http://workmanship.nasa.gov/index.jsp

http://www.globalsmt.net/troubleshooter/index.htm

http://www.learningelectronics.net/


And Of Course:

http://preher-tech.com/default.aspx

[PlainBill]

Re: Online electronics training?

Thank you!!

PlainBill

[PCBONEZ]

Re: Online electronics training?

http://www.rarmy.com/coleman/neets/index.html

[PlainBill]

Re: Online electronics training?

http://www.rarmy.com/coleman/neets/index.html

Hmm, there are a few modules there that might be able to fill in some blanks in my knowledge base.

PlainBill

[Toasty]

Re: Online electronics training?

Then for "offline" basics, one of my original "bathroom readers"...

[hardwareguy]

Re: Online electronics training?

I can't believe nobody mentioned RepairFAQ!
http://www.repairfaq.org/

[barry wilkins]

Re: Online electronics training?

What is the normal input impedance of a DMV ?
1Meg ohms or 10Meg ohms .
I looked on the Fluke website for the type 87 digital gvoltmeter ,but no mention of input impedance ?
I know oscilloscopes are generaly 1Meg input ,multiplied by 10 with an attenuated probe 10:1.
I have a slight problem with measuring dynode chains used with photomultiplier tubes ,because the supply is very high impendance you need to take account of the DVM ,it will load the voltage and give a low reading .
Any information would be appreciated

Barry Wilkins

[PlainBill]

Re: Online electronics training?

What is the normal input impedance of a DMV ?
1Meg ohms or 10Meg ohms .
I looked on the Fluke website for the type 87 digital gvoltmeter ,but no mention of input impedance ?
I know oscilloscopes are generaly 1Meg input ,multiplied by 10 with an attenuated probe 10:1.
I have a slight problem with measuring dynode chains used with photomultiplier tubes ,because the supply is very high impendance you need to take account of the DVM ,it will load the voltage and give a low reading .
Any information would be appreciated

Barry Wilkins

Old standard or current standard?

Every DMM I have ever seen had an input impedance of 10 Megohm. VOMs are rated at 'Ohms per volt (of full scale range) sensitivity'. 50K per volt was common. Back in the days of the analog meters (VTVM and TVM), the standard input impedance was 11 megohms.

As for the Fluke, it's 10 Meg shunted by less than 100 pf, according to page 41 of the users manual.

PlainBill

[Junk Parts]

Re: Online electronics training?

PlainBill I took "Solid State Computer Repair" at a school called RETS Electronics Schools" in Baltimore back in the early eighties. The course of study started with the very basics and built upon this to much more complex level. Most every class was a few hours of theory as well as a few hous of hands on work. Now we didn't work with CRT's, and I have often wondered why. Maybe CTR's/TV's were in the TV course of study. I do believe that RETS does offer online study now, and I think that they have schools from coast to coast. Check them out.
I think that RETS is connected with TESST in some way. This TESST College may also offer what you are looking for.
Just to be clear on this. My course was at the componet repair level. It wasn't a course to just teach you how to switch out add-in boards, and motherboards...ect.

[tmwalsh]

Re: Online electronics training?

Check this for basics...

http://williamson-labs.com/home.htm

Not exactly training, more like explaining. But there are tutorials...

I liked the site and content.

tom

[infringer]

Re: Online electronics training?

To keep it simple for you buddy check here:

http://forum.allaboutcircuits.com/index.php

Notice all the tabs on the website this is the quickest and easiest format I have found still claimed to be a work in progress but filled with information for anyone.

Personally I think this website and that website should join forces to create the ultimate electronics repair forum on the net.