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Re: [Amps] 240 Volt Blowers needed

To: <jim@audiosystemsgroup.com>, <amps@contesting.com>
Subject: Re: [Amps] 240 Volt Blowers needed
From: "Carl" <km1h@jeremy.qozzy.com>
Date: Mon, 20 Mar 2017 19:35:03 -0400
List-post: <amps@contesting.com">mailto:amps@contesting.com>

----- Original Message ----- From: "Jim Brown" <jim@audiosystemsgroup.com>
To: <amps@contesting.com>
Sent: Monday, March 20, 2017 5:17 PM
Subject: Re: [Amps] 240 Volt Blowers needed


On Mon,3/20/2017 2:04 PM, Carl wrote:
Yes, remember that it's perfectly OK to run a 120V load between one side of the TX primary and its center tap. This is often done by the first rate amp mfrs. And remember that it is NOT OK (and is illegal) to run a 120V load between one side of the line and ground. Indeed, putting load current on ground is a recipe for hum pickup. And bonding neutral to ground is even worse.

73, Jim K9YC

Except those high enders that went to ground


I don't understand what you mean, Carl.

73, Jim

The Alpha 70/70V and 77 series were built that way and a few other brands I dont remember right now. Possibly Henry. I did it that way for 30 years on a HB 2M 1500W amp until I actually drew out the circuit when I wanted to repackage it into something smaller. It is very easy to make that mistake and it never affected me....BUT?

Carl
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