SSTC Audio modulation / Tesla Coils / Forums

Forums

4hv.org :: Forums :: Tesla Coils

« Previous topic | Next topic »

SSTC Audio modulation

previous 1 2 3 4 next

Move Thread

LAN_403

Fri Feb 03 2012, 10:29PM

Registered Member #4146 Joined: Tue Oct 18 2011, 02:01AM
Location: Wisconsin, U.S.A
Posts: 56

Just ordered my transmitter and reciever should be here early next week hopefully it works out well.

Gregory

Fri Feb 03 2012, 11:02PM

Registered Member #2922 Joined: Sun Jun 13 2010, 12:08AM
Location:
Posts: 226

I have a MIDI modulator., but I drew a audio modulator that can be used with DRSSTC. Here is:

Goodchild

Sat Feb 04 2012, 03:48PM

Registered Member #2292 Joined: Fri Aug 14 2009, 05:33PM
Location: The Wild West AKA Arizona
Posts: 795

teravolt wrote ...

Hear is a cuple more examples the first three pictures are of my SLR inverter under conctruction project 2 and the fourth and fifth is project 1 a DRSSTC, a over all picture and wave forms. I would like to use those IF-D96 reciever and transmiter I'm not shure what sort of fall time they have. That will detemin what sort of frequeny it is pausible to use them up to. I'm shure they will handle a interuptor pulse as shown in the vid. The one thing that people have complaned about is the delay on optical links hopfully I can work that out or it won't be a problem with something like phase leading. I like optics because I can controle the drive signals to my IGBT's more precisly than transformers. I relise this might be a little advanced for this thread but you can get an idea what is pausible because to my knowlage no body has been willing to do it. if people want ideas I am willing to help. I like this thread because I plan to audio modulat miy DRSSTC in the future

Your work is fantastic!!!! I really like your gate drive setup, it just looks incredibly professional.

I'm betting those ST fiber units would also work well in a gate drive situation. If I remember right they have a bandwidth of 125MHz with I would think is more than suitable for KHz range gate drive. The fiber is probably even faster than the 74HC logic chips.... hehe

teravolt

Sat Feb 04 2012, 04:44PM

Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111

thanks goodchild, thats exactly what I designed them for. In my latest version the fiber optic HFBR-2521z (I think has a 5Mhz response)drives a 74hc14 and then intern drives a ixdd414ci then drives the gate at a 0 to 20v gate signal. the limeting factor is the IXDD414ci heat disapation but I bet I might be able to squeek a Mhz out of it on a pulse basis. I was useing opto isolators insted but I find that the FO's are better. each gate has its own raw DC power supply for 4 supplies and regulators on the board. With FO's and optos I get galvonic isolaton from each other and the mains. I have got theas IGBT's up to 170Khz faster than my resonant primary. I can accuratly controle the on time of each gate like deadtime. it is accualy prety easy to setup, circuit wise, it just requires alot more preperation than transformers.

Mon Feb 06 2012, 02:52PM

Registered Member #4146 Joined: Tue Oct 18 2011, 02:01AM
Location: Wisconsin, U.S.A
Posts: 56

I completely agree, Excellent work Teravolt it looks professional and very well done.

teravolt

Mon Feb 06 2012, 11:21PM

Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111

thanks

Tue Feb 07 2012, 05:23PM

Registered Member #4146 Joined: Tue Oct 18 2011, 02:01AM
Location: Wisconsin, U.S.A
Posts: 56

Just got my parts yesterday and slapped it all together. It was a success! i'll try to take some videos of it today.

Littlecoiller2012

Tue Feb 07 2012, 06:58PM

Registered Member #4373 Joined: Sat Jan 28 2012, 08:44PM
Location:
Posts: 11

Awsome HB Take some pictures for me if ya can so i can get a better idea. Looking forward to the video! Im excited!

Wed Feb 08 2012, 01:46AM

Registered Member #4146 Joined: Tue Oct 18 2011, 02:01AM
Location: Wisconsin, U.S.A
Posts: 56

Ok as promised here is a video of my SSTC playing RTTTL ringtones from my Arduino through fiber optic cable.

note: Don't think i had it running full power but close enough for a demo.

teravolt

Wed Feb 08 2012, 04:23AM

Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111

have you ladies and gentlemen seen Phillips SD card music generator

this type of modulation could be done. I wonder if a analog converter could be built or digital that would take a audio signal and convert it into a group of 300us pulses that a tesla would accept. a filter with a 2500khz cutoff would have to be in front of the device so high frequencies wouldn't overload the tesla. just an idea

previous 1 2 3 4 next

Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob