Homebrew_PCBs

Hi,

I have been lurking on this list for ages, as I want to learn more about electronics (especially interfacing pic chips to the real world), but as of yet I am still learning and mostly confused! :o)

Although I can assemble small project PCBs and roughly understand how they work, my understanding of why "that" resistor is "there" is next to zero.

I have a couple of questions for the group.

1. are there any good basic electronic foundation tutorials on the net? all the ones I find are too basic (like what a resistor is)

2. Anyone here have any experience of ultrasonic cleaning baths? I have the schematic for the electrical side, with an explanation of many of the components, but I have no idea what specific components to use, anyone interested in looking at the schematic, helping me make one of these and furthering my electrical experience and understanding?

thanks in advance

Jon

PS: Anyone here ever known someone to buy one of the cheap (under $300) fibrescopes? (also known as a borescope or endoscope)... I would love one of these, but I suspect they are trash.



[Non-text portions of this message have been removed]

Some good places to look for links to tutorials:
http://groups.yahoo.com/group/nwpropmasters/links
http://groups.yahoo.com/group/mad_scientist/links

A good place for links and to ask for help learning
electronics:
http://groups.yahoo.com/group/Electronics_101/

The ultrasonic cleaner schematics should have part
numbers for the transistors. I'd suggest going to the
Electronics_101 list, post the schematic to the files
section and ask for help there. I'm on that list also,
there are over 1000 members.

Steve Greenfield

--- J Mitchell <jonster_man@...> wrote:

> Hi,
>
> I have been lurking on this list for ages, as I want
> to learn more about electronics (especially
> interfacing pic chips to the real world), but as of
> yet I am still learning and mostly confused! :o)
>
> Although I can assemble small project PCBs and
> roughly understand how they work, my understanding
> of why "that" resistor is "there" is next to zero.
>
> I have a couple of questions for the group.
>
> 1. are there any good basic electronic foundation
> tutorials on the net? all the ones I find are too
> basic (like what a resistor is)
>
> 2. Anyone here have any experience of ultrasonic
> cleaning baths? I have the schematic for the
> electrical side, with an explanation of many of the
> components, but I have no idea what specific
> components to use, anyone interested in looking at
> the schematic, helping me make one of these and
> furthering my electrical experience and
> understanding?
>
> thanks in advance
>
> Jon
>
> PS: Anyone here ever known someone to buy one of
> the cheap (under $300) fibrescopes? (also known as a
> borescope or endoscope)... I would love one of
> these, but I suspect they are trash.

__________________________________________________
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Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com

Thanks, checking it out now!

No part numbers on the schematic :o( but its a very simple looking circuit.... will try the 101 group.

jon

----- Original Message -----
From: Steve Greenfield
To: Homebrew_PCBs@yahoogroups.com
Sent: Sunday, February 24, 2002 12:58 AM
Subject: Re: [Homebrew_PCBs] ultrasonic cleaners


Some good places to look for links to tutorials:
http://groups.yahoo.com/group/nwpropmasters/links
http://groups.yahoo.com/group/mad_scientist/links

A good place for links and to ask for help learning
electronics:
http://groups.yahoo.com/group/Electronics_101/

The ultrasonic cleaner schematics should have part
numbers for the transistors. I'd suggest going to the
Electronics_101 list, post the schematic to the files
section and ask for help there. I'm on that list also,
there are over 1000 members.

Steve Greenfield

--- J Mitchell <jonster_man@...> wrote:
> Hi,
>
> I have been lurking on this list for ages, as I want
> to learn more about electronics (especially
> interfacing pic chips to the real world), but as of
> yet I am still learning and mostly confused! :o)
>
> Although I can assemble small project PCBs and
> roughly understand how they work, my understanding
> of why "that" resistor is "there" is next to zero.
>
> I have a couple of questions for the group.
>
> 1. are there any good basic electronic foundation
> tutorials on the net? all the ones I find are too
> basic (like what a resistor is)
>
> 2. Anyone here have any experience of ultrasonic
> cleaning baths? I have the schematic for the
> electrical side, with an explanation of many of the
> components, but I have no idea what specific
> components to use, anyone interested in looking at
> the schematic, helping me make one of these and
> furthering my electrical experience and
> understanding?
>
> thanks in advance
>
> Jon
>
> PS: Anyone here ever known someone to buy one of
> the cheap (under $300) fibrescopes? (also known as a
> borescope or endoscope)... I would love one of
> these, but I suspect they are trash.


__________________________________________________
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Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com

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[Non-text portions of this message have been removed]

Jon:

Here are some various electronic links. Perhaps one or more will be of
interest/use to you. I realize Radio Shack is a Yank firm, but I have seen
them there in smaller towns outside London, so perhaps there is one near you.
The ones here, at least, carry "basic" books, and if you can find one with a
helpful/friendly staffer, you might become a PhD in a week!

Regards, and good luck! Jan Rowland, Old Ugly Yank with attitude.

<A HREF="aol://5863:126/mB:197359">Electronic Projects</A>
<A HREF="http://www.geocities.com/SiliconValley/Code/8738/electron.html">Electronics</A>
<A HREF="http://www.tinaja.com/">Don Lancaster's GURU'S LAIR home page</A>
<A HREF="http://members.tripod.com/schematics/">Diana's Electronics Info Page</A>
<A HREF="http://www.users.dircon.co.uk/~doctron/555.htm">555 tutorial</A>
<A HREF="http://howstuffworks.com/">HowStuffWorks - Learn how Everything Works!</A>





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