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Subject: Re: [Homebrew_PCBs] drill pcb

From: rolohar@...
Date: 2016-02-26

I don't think you actually know what the term "isolation" means
in the context of this discussion.

A power cord plug does not imply isolation. It merely indicates that the device (whatever it is)
connects to a power source in a rather conventional manner.

Are you familiar with: Two-pronged electrical appliance plugs with no polarization?
Two-pronged plugs with polarized prongs?
Three pronged plugs?
Ground-Fault Interruption (GFI) outlets?
And why we have these configurations??

And...............

If "P.D." means "pixie dust" to you............I'm comfortable with that.
I thrive on flattery and unsolicited praise.

Suggestion: There a number of videos on YouTube about the subject.
Sit for a few minutes and view some of them.

Also, try to comprehend the significance of "ISOLATION" in the context of electrical power sources and
the application of electrical power to an electrical device.

And.....yes.

There will be questions on both the mid-term and the final exams on this subject.

All the best to you!

Roland F. Harriston, P.D
∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗

From: "Jean-Paul Louis louijp@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com>
To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, February 25, 2016 7:30:18 PM
Subject: Re: [Homebrew_PCBs] drill pcb

 

Roland,

I fail to understand why you believe that an autotransformer is less isolated that the mains outlet.
An autotransformer properly built has a power cord to connect to the local mains, and an outlet for the other voltage.
What’s unsafe about that?

Please enlighten us, and also tell us what P.D. after your name mean. Is that an acronym for Pixie Dust?
If you had at least a minimum of engineering knowledge, you would know about LinkedIn which is the largest professional network on the western world Internet.

It you want to check my own credentials, you can look me up on the FCC database with my callsign (N1JPL)
and on linkedIn under my full name that you will find on the FCC database.

Jean-Paul
N1JPL

> On Feb 25, 2016, at 7:14 PM, rolohar@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
>
>
> YES!
>
> Let's drop it.
>
> But...........................stay ISOLATED!
>
> Electrically.......that is.
>
> Roland F. Harriston, P.D.
> ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗
>
> From: "Will zl1tao@... [Homebrew_PCBs]" <Homebrew_PCBs@yahoogroups.com>
> To: "Homebrew PCBs" <Homebrew_PCBs@yahoogroups.com>
> Sent: Thursday, February 25, 2016 5:08:25 PM
> Subject: Re: [Homebrew_PCBs] Re: drill pcb
>
>
>
>
> On 26/02/16 12:59, rolohar@... [Homebrew_PCBs] wrote:
> >
> >
> > What is "LinkedIn" ?
> >
>
> It's for those folks who earn too much money for their brainpower.
>
> Can we drop this saga please.
>
> Cheers,
> Will
>
>
>
>