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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Step\s+Start\s+circuit\s+\-\s+needed\s+or\s+not\?\s*$/: 6 ]

Total 6 documents matching your query.

1. [Amps] Step Start circuit - needed or not? (score: 1)
Author: "Chuck Chandler" <ws1l@comcast.net>
Date: Tue, 23 Feb 2010 07:06:18 -0600
I'm the new owner of a Heathkit SB-1000 amp, running it on 120 VAC. It is replacing my AL-811. When I bought the 811 I also bought an Ameritron Inrush Current Protector, and have always used it to tu
/archives//html/Amps/2010-02/msg00681.html (7,848 bytes)

2. Re: [Amps] Step Start circuit - needed or not? (score: 1)
Author: Gudguyham@aol.com
Date: Tue, 23 Feb 2010 08:16:33 EST
Tom W8JI designed the AL-80A which is the same amp as the SB-1000 in a different looking box. He claims a step start is not needed, however later versions of the AL-80A did have them. When Tom was as
/archives//html/Amps/2010-02/msg00683.html (8,717 bytes)

3. Re: [Amps] Step Start circuit - needed or not? (score: 1)
Author: "k7fm" <k7fm@teleport.com>
Date: Tue, 23 Feb 2010 06:27:02 -0800
If the inrush current is so great that there is a large power surge, then in-rush protection is a good idea. In many cases, this is desireable in home-brew amps, where surplus and oversized component
/archives//html/Amps/2010-02/msg00689.html (8,213 bytes)

4. Re: [Amps] Step Start circuit - needed or not? (score: 1)
Author: Vic K2VCO <vic@rakefet.com>
Date: Tue, 23 Feb 2010 08:18:40 -0800
The SB-1000 does not require a step-start. The transformer is designed so that the secondaries have enough impedance to protect the diodes and tube filament at startup. It also has a relay to protect
/archives//html/Amps/2010-02/msg00694.html (8,997 bytes)

5. [Amps] Step Start circuit - needed or not? (score: 1)
Author: "herzog@frontiernet.net@frontiernet.net" <herzog@frontiernet.net>
Date: Tue, 23 Feb 2010 22:42:35 -0500
Replying to:Subject: Re: [Amps] [HeathKit_HFAmps] Step Start circuit - needed or not? I say NEEDED when in doubt. I designed a ten KW amp, at my day job. I didn't know why Collins used a step start i
/archives//html/Amps/2010-02/msg00707.html (8,384 bytes)

6. Re: [Amps] Step Start circuit - needed or not? (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Tue, 23 Feb 2010 21:20:38 -0800
On Tue, 23 Feb 2010 22:42:35 -0500, herzog@frontiernet.net@frontiernet.net wrote: We learned that in the pro audio world too, again with the power supplies for big power amps. If you've got a couple
/archives//html/Amps/2010-02/msg00710.html (7,843 bytes)

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