Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search

Author Topic: triac tesla coils  (Read 2543 times)

LazerBolts

  • Newbie
  • *
  • Posts: 9
triac tesla coils
« on: July 29, 2019, 12:21:43 PM »
Can triacs discharge capacitors into the primary of a tesla coil?

This would permit low voltage high current operation and absence of spark gaps reduces EMI but not sure if there are any tesla coils incorporating triacs instead of spark gaps.

Raycathode

  • Sr. Member
  • ****
  • Posts: 450
Re: triac tesla coils
« Reply #1 on: July 29, 2019, 01:13:49 PM »
Can triacs discharge capacitors into the primary of a tesla coil?

This would permit low voltage high current operation and absence of spark gaps reduces EMI but not sure if there are any tesla coils incorporating triacs instead of spark gaps.
Hi there, Do mean an SCR by any chance? the problem with an SCR in it's conductive state it has a resistance of about 5 ohms and a depletion layer of about .5 volt or so that can't easily be over come and there is another problem with trying to turn the device off very quickly and if being used directly as the power device as it's a p.n.p.n bipolar device.
A MOSFET device would be a much better device as it's conductive resistance can be as low as .005 or better but you would have to totem pole them and bias them correctly to cater for the huge back EMF pressure would be an easier problem to solve.

Regards Raymondo

LazerBolts

  • Newbie
  • *
  • Posts: 9
Re: triac tesla coils
« Reply #2 on: July 31, 2019, 11:42:02 PM »
Hi there, Do mean an SCR by any chance? the problem with an SCR in it's conductive state it has a resistance of about 5 ohms and a depletion layer of about .5 volt or so that can't easily be over come and there is another problem with trying to turn the device off very quickly and if being used directly as the power device as it's a p.n.p.n bipolar device.
A MOSFET device would be a much better device as it's conductive resistance can be as low as .005 or better but you would have to totem pole them and bias them correctly to cater for the huge back EMF pressure would be an easier problem to solve.

Regards Raymondo
Triacs are bidirectional thyristors.