Hi All - Electronic Circuits Projects Diagrams Free

MrZ · 29th March 2007, 10:07 AM

New member checking in. I like the look of your site and decided to join.
My interests at the moment include : using usb, pics, stepper motors and ir barriers. I was drawn here in fact by a google link to the search ir barrier. Checking out the circuit now.
I've spent 12 years in Silicon Valley practising rf. I'm not a Ham, but I've learned much from them. I've migrated to Oz, and now I teach HS science.
I hope to participate here from time to time.

Cheers,
MrZ

gerty · 29th March 2007, 01:09 PM

Welcome aboard..

ikalogic · 29th March 2007, 03:50 PM

welcome

my first question to you, what is HS?

oh, here comes the second question, what is Oz?

Leftyretro · 29th March 2007, 04:00 PM

Quote:

Originally Posted by ikalogic

welcome

my first question to you, what is HS?

oh, here comes the second question, what is Oz?

"what is Oz?"

Well a guess is that he's not in Kansas anymore, Toto

Gaston · 29th March 2007, 11:33 PM

i'm going to guess that HS is high school.

mramos1 · 29th March 2007, 11:52 PM

Welcome aboard.. Filled in locations is always welcome by me.

HS is high school, Oz is where my buddy is doing his honeymoon (Sidney I think or that area).

RF is something many here like. Hope you can help out.

Try not give the sudents all the answers. Read some forums for links to tutorials that already exists so you do not waste time. Many others have spent a lot of time putting the information on the web and you can direct them there.

MrZ · 30th March 2007, 11:01 AM

Thanks for answering the ???'s. You are correct. Well done! Sorry I couldn't resist.

Do you guys remember anything electronic you did in HS? Remember the sorry old wires with alligator clips and woefully inaccurate analog voltmeters? Well they are still in there. I'd like to update the equipment by building it with the students. Each succeeding year would add a new layer.
I guess the first thing is the power supplies. Why are power supplies so expensive?

mramos1 · 30th March 2007, 11:54 AM

Variable power and current are. mpja.com might be a place to look for low cost units. But they are in the US.

ikalogic · 30th March 2007, 12:15 PM

Quote:

Originally Posted by MrZ

Why are power supplies so expensive?

Because they do it for you!

MrZ · 30th March 2007, 12:18 PM

I've been browsing some circuits posted here... The MJPA site has a $20 3-12V 2A model that looks not unlike what you find in classrooms today. It can handle 240VAC but would require an adapter here. I wonder if it could be hacked up a bit, replaced with a circuit like this
It would be nice to see a digital readout of amps and volts. I once built an A/D ckt that detected voltage from a thermistor.
The enclosure and coil might be worth the price alone.

hussain.elsaid · 30th March 2007, 06:40 PM

hi people,
I'd like if any one can tell me his opinion in this circuit i'm still a beginner in that, So I'd like to have comments please.
thanx

ikalogic · 30th March 2007, 07:13 PM

Quote:

Originally Posted by hussain.elsaid

hi people,
I'd like if any one can tell me his opinion in this circuit i'm still a beginner in that, So I'd like to have comments please.
thanx

why don't you start a new thread yabou saied!??

then, the schematic is not clear, nor did you say what it is all about... hey, there may be genuises here, not magicians!

Hero999 · 30th March 2007, 09:05 PM

Can't you zoom in a little bit?

Marks256 · 31st March 2007, 12:18 AM

Quote:

Originally Posted by Hero999

Can't you zoom in a little bit?

Hey! Give him a break! He couldn't even start his own thread, so why should he be able to zoom in?

Sceadwian · 31st March 2007, 02:36 AM

Schematics compress really well so using a larger than needed resolution is a good idea or no real details are visable.

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29th March 2007, 10:07 AM	(permalink)
MrZ	Hi All New member checking in. I like the look of your site and decided to join. My interests at the moment include : using usb, pics, stepper motors and ir barriers. I was drawn here in fact by a google link to the search ir barrier. Checking out the circuit now. I've spent 12 years in Silicon Valley practising rf. I'm not a Ham, but I've learned much from them. I've migrated to Oz, and now I teach HS science. I hope to participate here from time to time. Cheers, MrZ

29th March 2007, 01:09 PM	(permalink)
gerty	Welcome aboard.. __________________ gerty

29th March 2007, 03:50 PM	(permalink)
ikalogic	welcome my first question to you, what is HS? oh, here comes the second question, what is Oz? __________________ Ibrahim Kamal check my electronics and robotics page: http://www.ikalogic.com/

29th March 2007, 11:33 PM	(permalink)
Gaston	i'm going to guess that HS is high school.

29th March 2007, 11:52 PM	(permalink)
mramos1	Welcome aboard.. Filled in locations is always welcome by me. HS is high school, Oz is where my buddy is doing his honeymoon (Sidney I think or that area). RF is something many here like. Hope you can help out. Try not give the sudents all the answers. Read some forums for links to tutorials that already exists so you do not waste time. Many others have spent a lot of time putting the information on the web and you can direct them there.

30th March 2007, 11:01 AM	(permalink)
MrZ	Everything is upside down here Thanks for answering the ???'s. You are correct. Well done! Sorry I couldn't resist. Do you guys remember anything electronic you did in HS? Remember the sorry old wires with alligator clips and woefully inaccurate analog voltmeters? Well they are still in there. I'd like to update the equipment by building it with the students. Each succeeding year would add a new layer. I guess the first thing is the power supplies. Why are power supplies so expensive?

30th March 2007, 11:54 AM	(permalink)
mramos1	Variable power and current are. mpja.com might be a place to look for low cost units. But they are in the US.

30th March 2007, 12:18 PM	(permalink)
MrZ	Power Supplies I've been browsing some circuits posted here... The MJPA site has a $20 3-12V 2A model that looks not unlike what you find in classrooms today. It can handle 240VAC but would require an adapter here. I wonder if it could be hacked up a bit, replaced with a circuit like this It would be nice to see a digital readout of amps and volts. I once built an A/D ckt that detected voltage from a thermistor. The enclosure and coil might be worth the price alone.

30th March 2007, 09:05 PM	(permalink)
Hero999	Can't you zoom in a little bit? __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez

31st March 2007, 02:36 AM	(permalink)
Sceadwian	Schematics compress really well so using a larger than needed resolution is a good idea or no real details are visable. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."