MacIntoshCZ
Active Member
The tittle speaks for itself.
I tried to wind the pulse transformer at 50khz with only one wire to test the skin effect. It must be said that the diameter of the wire was 0.5 mm. So size wasn't that critical. The primary was wound with one wire, the secondary with two. The target power should be 200W. Primary voltage approx. 300V, 39 primary turns, 16 secondary. At full power, all components were beautifully cold, I already thought I had won, but then I noticed that the transformer was 70 degrees. What is the safe temperature of pulse transformers at full load? 70 degrees seems to me enough due to the isolation between the primary / secondary. I did the insulation with electrical tape, so I'm bad at the temperature.
I tried to wind the pulse transformer at 50khz with only one wire to test the skin effect. It must be said that the diameter of the wire was 0.5 mm. So size wasn't that critical. The primary was wound with one wire, the secondary with two. The target power should be 200W. Primary voltage approx. 300V, 39 primary turns, 16 secondary. At full power, all components were beautifully cold, I already thought I had won, but then I noticed that the transformer was 70 degrees. What is the safe temperature of pulse transformers at full load? 70 degrees seems to me enough due to the isolation between the primary / secondary. I did the insulation with electrical tape, so I'm bad at the temperature.