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Valves / Vacuum Tubes
DIY Simple Output Transformer
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<blockquote data-quote="Ampdog" data-source="post: 79795" data-attributes="member: 144"><p>How nice to have CAD programs today for design! But not complaining. I mentioned earlier (on another thread) that I am still using the Crowhurst graphs, as I have set out with them about 5 decades ago, and do not design OPTs that often. Karel, you then asked me to compare the two, which I could not then do without knowing more about your program.</p><p></p><p>As far as moving things up and down and noting the difference, as in 'zeroing in' on the final specs, the programme is undoubtedly convenient! For interest sake (now that you have a final design), I will do the same using the graphs - interesting to see how the results will compare. I must mention that if it does, a bit of my experience comes into it, in the sense that I corrected e.g. the metal ? (I have used the same core material over the years) to fit measurements. I sometimes got a practical primary inductance well over what was used in a design (which usually did not worry me as it was advantageous, as you stated). Leakage was usually spot-on - which is surprising, because it seriously depends on how tight the windings are; spacing between sections etc.</p><p></p><p>From me, congratulations on a method well-explained. </p></blockquote><p></p>
[QUOTE="Ampdog, post: 79795, member: 144"] How nice to have CAD programs today for design! But not complaining. I mentioned earlier (on another thread) that I am still using the Crowhurst graphs, as I have set out with them about 5 decades ago, and do not design OPTs that often. Karel, you then asked me to compare the two, which I could not then do without knowing more about your program. As far as moving things up and down and noting the difference, as in 'zeroing in' on the final specs, the programme is undoubtedly convenient! For interest sake (now that you have a final design), I will do the same using the graphs - interesting to see how the results will compare. I must mention that if it does, a bit of my experience comes into it, in the sense that I corrected e.g. the metal ? (I have used the same core material over the years) to fit measurements. I sometimes got a practical primary inductance well over what was used in a design (which usually did not worry me as it was advantageous, as you stated). Leakage was usually spot-on - which is surprising, because it seriously depends on how tight the windings are; spacing between sections etc. From me, congratulations on a method well-explained. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
DIY Simple Output Transformer
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