I found a 400V part on Mouser and ordered that.
> -Original Message-
> From: Jonathan Chapman
> Sent: 18 February 2022 21:23
> To: r...@jarratt.me.uk; Rob Jarratt ; General
> Discussion: On-Topic and Off-Topic Posts
> Subject: RE: Testing H745 Regulators
>
> &g
> I always forget that the VAC is the RMS and not the peak-to-peak. I will
> look for a minimum rating of 100V.
600V bridge modules are often more cost effective, and more likely to be in
stock. That's why I went with the Vishay part I used.
If you can't find what you need due to shortages, you
On 2022-Feb-17, at 11:40 PM, Rob Jarratt wrote:
>> -Original Message-
>> From: Brent Hilpert
>> On 2022-Feb-17, at 2:38 PM, Rob Jarratt wrote:
-Original Message-
From: Brent Hilpert
20V on a 10 ohm load: current = 2A.
15V, 1.5A.
In this regulat
> -Original Message-
> From: Brent Hilpert
> Sent: 18 February 2022 06:30
> To: r...@jarratt.me.uk; General Discussion: On-Topic and Off-Topic Posts
>
> Subject: Re: Testing H745 Regulators
>
> On 2022-Feb-17, at 2:38 PM, Rob Jarratt wrote:
> >> ---
On 2022-Feb-17, at 2:38 PM, Rob Jarratt wrote:
>> -Original Message-
>> From: Brent Hilpert
>>
>> 20V on a 10 ohm load: current = 2A.
>> 15V, 1.5A.
>>
>> In this regulator design there is no path for more current than that which
>> the
>> load draws, aside from temporary peak currents t
> Discussion: On-Topic and Off-Topic Posts
> Subject: RE: Testing H745 Regulators
>
> I used a Vishay GBPC3506W-E4/51, which is 600V 35A, 400A inrush rated.
> Looks like they're currently on-order at Mouser, I don't know about other
> suppliers.
>
> The GBPC3506W
> >
> > Discussion: On-Topic and Off-Topic Posts' cctalk@classiccmp.org
> >
> > Subject: RE: Testing H745 Regulators
> >
> > Sorry it has been a while responding. I have been looking further at my
>
> H745
>
> > regulators this evening. Below is
m: Rob Jarratt
> Sent: 17 February 2022 22:38
> To: 'Brent Hilpert' ; r...@jarratt.me.uk; 'General
> Discussion: On-Topic and Off-Topic Posts'
> Subject: RE: Testing H745 Regulators
>
> Sorry it has been a while responding. I have been looking further at my
H74
3
> To: r...@jarratt.me.uk; Rob Jarratt ; General
> Discussion: On-Topic and Off-Topic Posts
> Subject: Re: Testing H745 Regulators
>
> On 2022-Jan-26, at 3:41 PM, Rob Jarratt via cctalk wrote:
> > I am trying to test a couple of H745 regulators with a DC bench PSU
> >
The guys at RICM have seen a problem with these supplies that if the output
cap is bad it won't start switching properly. It goes into a mode where it
acts as a linear regulator. As far as I remember they the a spice
simulation that also indicated this when the output cap had low
capacitance.
Do y
On 2022-Jan-26, at 3:41 PM, Rob Jarratt via cctalk wrote:
> I am trying to test a couple of H745 regulators with a DC bench PSU and I am
> having some problems with testing them.
>
> My bench PSU is a twin unit so I can supply the +15V required as well as the
> "AC" input using 20VDC from the othe
00:11
> >
> > To: r...@jarratt.me.uk; Rob Jarratt robert.jarr...@ntlworld.com; General
> >
> > Discussion: On-Topic and Off-Topic Posts cctalk@classiccmp.org
> >
> > Subject: RE: Testing H745 Regulators
> >
> > Any chance you have a second supply yo
> -Original Message-
> From: W2HX
> Sent: 27 January 2022 00:11
> To: r...@jarratt.me.uk; Rob Jarratt ; General
> Discussion: On-Topic and Off-Topic Posts
> Subject: RE: Testing H745 Regulators
>
> Any chance you have a second supply you can parallel with the
et on both
73 Eugene W2HX
Subscribe to my Youtube Channel: https://www.youtube.com/c/w2hx-channel/videos
-Original Message-
From: cctalk On Behalf Of Rob Jarratt via cctalk
Sent: Wednesday, January 26, 2022 6:42 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Testing
I am trying to test a couple of H745 regulators with a DC bench PSU and I am
having some problems with testing them.
My bench PSU is a twin unit so I can supply the +15V required as well as the
"AC" input using 20VDC from the other half of the bench PSU. The problem is
that I don't think the be
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