ballasting

• To: tesla-at-pupman-dot-com
• Subject: ballasting
• From: "Daniele Bortoluzzi" <dbortoluzzi-at-sogeda.it> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 09 May 2000 16:19:59 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Hi all... due to the problems I am reposting a mail that had no response.
hope cause of probs... :)
 
Maybe my questions are a bit funny for the pros... but I would like to ask the
same.
I was wondering about power limiting issues, in effect a friend told that a
primary ballast, 
is it resistive or inductive, will reduce the voltage input to the transformer
... is this right ? 
So, what do you think is the good combination ?  Variac and ballast ? Variac
only ? Variable ballast only ???
Imagine I want to build a "Triac based" (I have a 400 Volt 20 Ampere one) watt
absosption limiter rated 
for something like 1.5KVA maximum, am I going the right way to limit current
absorption from the transformer ?
Is this triac suitable for coil use ???
This cause I would like to have a "precise" limiting value... with a nice
tweedling knob there to play with power ;) 
They also sell kits for power limiting use nice for brush motors and the
like... What about these ?
 
I imagine all of these will cause a voltage drop or any weird sinusoid split
too...   :-\


Tnx to all for any help
ciao ciao

Daniele

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