parallel drsstc primary gets cooler and collects condensation. anybody know why?
dillon, Fri Jun 12 2015, 12:56AMI have a zvs sstc with 50nh+50nh primary coil with a 50 nf capacitor in parallel at 500kz. probably 200-250 amps circulating in it.
When I first built it I used litz wire at about 12 guage and it would get super hot in seconds. I switched to 1/4 inch copper tubeing. it never raises in temperature, I thought. Then I noticed a lot of water condensation on the primary. it was not humid either. I then measured the temperature and it actually dropped 7 degrees! how is that possible?
Re: parallel drsstc primary gets cooler and collects condensation. anybody know why?
Blackcurrant, Fri Jun 12 2015, 11:41AM
did you get your copper pipe from a freezer? could it have had coolant still in there that has now gassed off
Blackcurrant, Fri Jun 12 2015, 11:41AM
did you get your copper pipe from a freezer? could it have had coolant still in there that has now gassed off
Re: parallel drsstc primary gets cooler and collects condensation. anybody know why?
dillon, Fri Jun 12 2015, 02:20PM
no, bought it new at a hardware store ,I was made for ice makers. If I don't have the secondary coil in it. the primary will get so hot as to burn you. It's changing the performance or anything, I am just curious of the physics behind it.
dillon, Fri Jun 12 2015, 02:20PM
no, bought it new at a hardware store ,I was made for ice makers. If I don't have the secondary coil in it. the primary will get so hot as to burn you. It's changing the performance or anything, I am just curious of the physics behind it.
Re: parallel drsstc primary gets cooler and collects condensation. anybody know why?
Sigurthr, Fri Jun 12 2015, 03:30PM
There is a magnetic refrigeration effect in certain alloys which may be pertinent here. That's all I can think of that may be happening. Normally the effect is small but that's because the magnetic fields are small and weak. In a parallel LC circuit the magnetic fields are pretty strong, especially at hundreds of amps.
Sigurthr, Fri Jun 12 2015, 03:30PM
There is a magnetic refrigeration effect in certain alloys which may be pertinent here. That's all I can think of that may be happening. Normally the effect is small but that's because the magnetic fields are small and weak. In a parallel LC circuit the magnetic fields are pretty strong, especially at hundreds of amps.
Re: parallel drsstc primary gets cooler and collects condensation. anybody know why?
hen918, Sat Jun 13 2015, 11:09AM
To be clear did your pipe get hot whilst it was on, and then when turned off, it cooled below room temperature?
hen918, Sat Jun 13 2015, 11:09AM
To be clear did your pipe get hot whilst it was on, and then when turned off, it cooled below room temperature?
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