; <http://doug...@gmail.com> >
> Date: Tue, 18 Oct 2022 10:06:20 -0600
> To: Ken Javor <http://ken.ja...@emccompliance.com> >
> Cc: http://EMC-PSTC@listserv.ieee.org> >
> Subject: Re: [PSES] Assess risk of electric shock from charged capacitors
>
> Ken,
(256) 650-5261
>
>
> --
> *From: *"doug...@gmail.com <http://doug...@gmail.com> " <http://doug...@gmail.com> >
> *Reply-To: *"doug...@gmail.com <http://doug...@gmail.com> " <
> doug...@gmail.com <http://doug...
should not even be a subject of debate.
Ken Javor
Phone: (256) 650-5261
From: "doug...@gmail.com"
Date: Tue, 18 Oct 2022 10:06:20 -0600
To: Ken Javor
Cc:
Subject: Re: [PSES] Assess risk of electric shock from charged capacitors
Ken,
I may be wrong but I believe the reluctance to accep
>
> Ken Javor
> Phone: (256) 650-5261
>
>
> --
> *From: *"doug...@gmail.com"
> *Reply-To: *"doug...@gmail.com"
> *Date: *Mon, 17 Oct 2022 17:37:21 -0600
> *To: *
> *Subject: *Re: [PSES] Assess risk of electric shoc
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Assess risk of electric shock from charged capacitors
I'm curious as to the rationale behind that. It should be obvious that the
power was turned off at the appropriate time. That would be demonstrated
using an o'scope, just as in the hit or miss
-To: "doug...@gmail.com"
Date: Mon, 17 Oct 2022 17:37:21 -0600
To:
Subject: Re: [PSES] Assess risk of electric shock from charged capacitors
Ken,
Yes, but I have had certification engineers hesitate or disallow using any
home-brew solid state circuits to control safety testing.
-Dou
*"doug...@gmail.com"
> *Date: *Mon, 17 Oct 2022 13:08:17 -0600
> *To: *
> *Subject: *Re: [PSES] Assess risk of electric shock from charged
> capacitors
>
> On the question of probe resistance, I always recommend 100:1 probes which
> will have a negligible effect o
A simple circuit can provide disconnect at the peak of the ac waveform.
Ken Javor
Phone: (256) 650-5261
From: "doug...@gmail.com"
Reply-To: "doug...@gmail.com"
Date: Mon, 17 Oct 2022 13:08:17 -0600
To:
Subject: Re: [PSES] Assess risk of electric shock fro
ogies
>
>
>
>
>
>
>
> *From:* Scott Xe
> *Sent:* Monday, October 17, 2022 8:18 AM
> *To:* EMC-PSTC@LISTSERV.IEEE.ORG
> *Subject:* Re: [PSES] Assess risk of electric shock from charged
> capacitors
>
>
>
> In order to judge if there is no risk of electri
Another way to go is to buy a Capacitor Discharge Tester that is made to
perform the test you want. Just plug it in and press a couple buttons.
There may be more on the market but the only one I know of is made by
Compliance West USA, model CDT-240. We have the 15 amp version. The nice
thing
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Assess risk of electric shock from charged capacitors
In order to judge if there is no risk of electric shock from charged
capacitors, it is required to measure the voltage across L and N of mains plug
after the removal of power input. To avoid
Scott,
I very much prefer the two-channel o'scope dual-probe method using the A-B
function. Alternatively a differential o'scope probe is an option,
although they tend to be rather pricey. It is usually not necessary to get
high speed probes as this is only line frequency.
It is inadvisable to
In order to judge if there is no risk of electric shock from charged
capacitors, it is required to measure the voltage across L and N of mains
plug after the removal of power input. To avoid grounding loop between
test equipment and the unit under test, an isolating transformer is
strongly
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