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Re: [Amps] 811H pops fuses

To: <w7ry@centurytel.net>, <amps@contesting.com>
Subject: Re: [Amps] 811H pops fuses
From: "Carl" <km1h@jeremy.mv.com>
Date: Tue, 21 Jan 2014 11:02:41 -0500
List-post: <amps@contesting.com">mailto:amps@contesting.com>
He buys from JE/JEA and doesnt suspect a thing afik.

Carl
KM1H


----- Original Message ----- From: "Jim W7RY" <w7ry@centurytel.net>
To: <amps@contesting.com>
Sent: Monday, January 20, 2014 10:25 PM
Subject: Re: [Amps] 811H pops fuses


Is this the same guy that sells them on QTH.com?

73
Jim W7RY


On 1/20/2014 5:37 PM, Carl wrote:
Guaranteed Chinese, that fraud has been discussed elsewhere.

Carl
KM1H

----- Original Message ----- From: "Alek Petkovic" <vk6apk@bigpond.com>
To: "Tom Osborne" <w7why@frontier.com>
Cc: "Amps" <amps@contesting.com>
Sent: Monday, January 20, 2014 5:51 PM
Subject: Re: [Amps] 811H pops fuses


Found the caps I bought.

See Ebay item number 190875604650

73, Alek
VK6APK

On 21/01/2014 6:38 AM, Alek Petkovic wrote:
Yeah, that's right Tom.

Its the same with the AL-1500 model. More caps, higher voltage but they are still right on or over the limit of 450V per cap.

I changed mine for higher value, 500V jobs. I was able to fit 16 caps in the space where the 8 originals were. They are arranged as a string of 8 x 2 x 330uF/105°C caps in parallel. That's 8 x 660uF in series to give me 82.5uF at 4000V. There was nothing wrong with the 8 x 220uF caps. I just got nervous running them that high.

I bought them from the US, on the bay. They are probably cheap charlie ones but they do the job really well.

73, Alek.
VK6APK

On 21/01/2014 12:53 AM, Tom Osborne wrote:
Vic said:

Ameritron's prices are reasonable and they have shipped within a day every
time I've ordered parts from them.

The problem is - the Ameritron ones are rated at 450 volts. That seems like they are operating at pretty much their max. This one has about 1800-1900 plate voltage. Four of the Ameritrons are 1800 volts rating (unless they
have a built-in safety factor).  73
Tom W7WHY


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