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Registered Member #3964
Joined: Thu Jun 23 2011, 03:23AM
Location: Valenzuela City
Posts: 332
How to Construct antenna for feedbacking of DRSSTC? What kind of material are good for this purpose, how long? and what are the tips in making it more effective. How to get strong feedback signals? Is it much better if it is long rather than short? thanks in advance.
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
You need to use a CT for a DRSSTC; I doubt the antenna signal is reliable enough to maintain ZCS. Mind you, this is speculation based on the conclusion that secondary base current feedback is not reliable enough.
Registered Member #2292
Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795
The only issue I have with base current feedback is that the secondary base current is 90* out of phase with the primary drive current so you will be hard switching the IGBTs a bit (at least in a DRSSTC). On an SSTC It should work great, I used a based CT on my first SSTC and it worked nicely, much better than an antenna.
Base current feedback will work on DR, especially if you have mad skillz like Dr Spark
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Antenna
