Replying to Message: 7
Date: Thu, 19 Sep 2019 23:57:39 +0000 (UTC)
From: "daniel_kline7657@xxxxxxxxx" <daniel_kline7657@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Subject: Re: [TCML] **External Email** Dumb Ballast Question
Message-ID: <498638127.4056928.1568937459644@xxxxxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8
For a Romex equivalent ballast, try this:
Leave wire on spool,
Strip end #1 of black wire and attach to your circuit,
Strip end #2 of black wire and end #1 of white wire, connect these together
(in series).
Strip end #2 of white wire and attach to the other side of your circuit.
The inductance will be additive.
Your net inductance will equal = Lblack + Lwhite + Lmutual = Ltotal
Just watch your total voltage drop across the series coil.
Note: Romex AC wire is rated 300 or 600 volts, depending on the supplier,
where speaker wire is only rated for 50 or 150 volts.
But, If you:
Leave wire on spool,
Strip end #1 of black wire and attach to your circuit,
Strip end #1 of white wire and attach to the other side of your circuit,
Strip end #2 of black wire and end #2 of white wire, connect these together
(in parallel)
The inductances will cancel, leaving just pure resistive wire. This is
called bifilar winding.
Your net inductance will equal = Lblack - Lwhite = Ltotal = 0
Dick
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