Author Topic: QCW music with Midi  (Read 455 times)

Offline Teravolt

  • High Voltage Technician
  • ***
  • Posts: 100
  • Karma: +2/-0
    • View Profile
QCW music with Midi
« on: May 02, 2019, 09:34:12 PM »
I would like to be able to play midi notes into a QCW and I am looking for a way to convert a computer keyboard or synthasizer key board or sequencer. I am presantly designing the QCW to accept an audio input into a 300v class D amp. I am not shure how well this will work. the amp will be able to very in amplidude as well as frequency to apply to the power of a QCW. all inputs are welcome

Offline Teravolt

  • High Voltage Technician
  • ***
  • Posts: 100
  • Karma: +2/-0
    • View Profile
Re: QCW music with Midi
« Reply #1 on: May 04, 2019, 11:49:56 PM »
to whom may be interested, I am working un a buck converter slash class D amp and I am interested in reproducing

/>
now I know there was much talk about this video but I want to try doing this in a CW mode or near CW mode using something like this

https://www.arturia.com/microbrute-se/overview

so I have built the traditional D-amp with the ramped waveform but why not use an audio source instead of a ramped wave. with the circuit that I am working with I should be able to input a audio input. Typically a FPGA or microprocessor this might be a easy task buy phase shifting the DRSSTC bridge but I am not very proficient with software so I am taking the low road going analog. The amp that I built has a bipolar output vs. the typical 0v-300v volt ramp for twice the voltage. one of the hertals is building silicon IE bridge that can handle the average power that it might take. instead of using transformers I am doing direct drive witch is not usably done hear because of the set up for this. to do this I am using a

https://power.murata.com/pub/data/power/ncl/kdc_mgj6scdc.pdf

as a isolated power source and I isolated driver

https://www.infineon.com/dgdl/Infineon-1EDI20N12AF-DS-v02_00-EN.pdf?fileId=5546d4614755559a014790299add6112

originally I was using a quad power supply but I have managed to condense it using these components.
they are  driving 2 of these Semikron- SKM 400GB 123D , 400A, 1200V bricks with a fall and rise time of about 130 ns.
I am writing this article to show other ways to drive FETs or IGBTs other than using transformers as well seeing if any one is interested in my work.

the picture of the schematic is my current version that I am working on and the breadboard is what it looks like at some point I am going to solder it together. the other pictures are of the current way it looks

for the filter I kind of flowed

 https://www.loneoceans.com/labs/qcw/

but I used a Yellow core instead of a red core witch has a lower frequency response. The filter inductor has 2 windings wrapped in opposite directions and the pulse width signal from the half bridges are inverted to get a negative and positive ramp.

if any one is interested the tesla that I am working on is 500khz so the sword sparks can be achieved

http://www.seventransistorlabs.com/ClassD1/

so another current interest and that I want to try is synthesized music and my goal is to merry the beat step with the tesla

 


this project is on going and in depth and I am trying to see if any one has tried this or is interested

Offline Laci

  • High Voltage Engineer
  • ****
  • Posts: 209
  • Karma: +6/-0
    • View Profile
Re: QCW music with Midi
« Reply #2 on: May 08, 2019, 05:30:54 PM »
I THINK Steve Ward did something similar with his QCW:
https://www.youtube.com/watch?v=QpKNbvonSic

I didn't make anything similar to this,but I'm interested,so keep up the good work!

Offline flyglas

  • High Voltage Enthusiast
  • *
  • Posts: 11
  • Karma: +0/-0
    • View Profile
Re: QCW music with Midi
« Reply #3 on: May 08, 2019, 06:24:36 PM »
Hi,
the 4 QCW coils in the video are realized with phase-shifted h-bridges but the buck-converter approach is also possible (see comment on youtube). The desired note is added (modulated) on top of the standard QCW ramp.

With this you have a single straight streamer. Only within the growing time of the streamer a note is present.


Your approach with isolated dc/dc converters is very nice. I tried it with smaller 2W dc/dc converter, because the big ones are very expensive.
Edit: Wow, the MGJ6D121510DC are only 15 EUR per piece.

My attemped failed due to the low output power of the small converters.
« Last Edit: May 08, 2019, 06:30:41 PM by flyglas »

Offline Teravolt

  • High Voltage Technician
  • ***
  • Posts: 100
  • Karma: +2/-0
    • View Profile
Re: QCW music with Midi
« Reply #4 on: May 09, 2019, 06:29:36 AM »
I don t care much for transformer circuits because when they don't work they are a bitch so went to developing isolated drive circuits. The infinium driver and murata dc to dc power supply were almost made for each other in that I can drive IGBT's or MOSFETs with -5 to +15 with about 2 ohms. This makes the rise and fall times fast in the 100ns times. It depends on how much capacitance is in the gate. The drivers also have sub nano second internal delay reducing your feedback to switching time thus hopping I wont have to use a phase lead circuit at the feed back input. With direct drive I can switch the MOSFETs with a TTL input and control timing, phase, dead time, or a microprocessor.

my earlier versions used quad isolated power supplies consisting of a transformer, raw dc and a 15v regulator. very easy to make for about 100$us. With that I used HFBR-2522Z fiber optics or magnetic isolator, IL710, to isolate my signal and drive a IXDD614CI or even a 30A IXDD630CI. With those FETs and IGBTs can be driven with 1-4 ohms and bipolar voltages if thought about. This can also get 100s of nano seconds or less of rise and fall times

I want to set this up to drive a bridge of IXYH100N650C3 200A 830W FETs for the DRSSTC at about 400-500KHz I made the setup I just need test and implement which will follow the D amplifier. This may take some time but I think I know what has to be done.

High Voltage Forum

Re: QCW music with Midi
« Reply #4 on: May 09, 2019, 06:29:36 AM »

 


* Recent Topics and Posts

post Re: You would think this would be easy to find.
[Spark gap Tesla coils]
thedoc298
August 17, 2019, 11:09:16 PM
post Re: You would think this would be easy to find.
[Spark gap Tesla coils]
thedoc298
August 17, 2019, 11:00:32 PM
post Re: You would think this would be easy to find.
[Spark gap Tesla coils]
Fumeaux
August 17, 2019, 09:44:07 PM
post You would think this would be easy to find.
[Spark gap Tesla coils]
thedoc298
August 17, 2019, 09:01:00 PM
post Re: Twin System Build
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 17, 2019, 08:06:42 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 17, 2019, 10:45:26 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 17, 2019, 06:21:45 AM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Hydron
August 17, 2019, 12:59:20 AM
post Re: Twin System Build
[Dual Resonant Solid State Tesla coils]
fnordest
August 17, 2019, 12:18:48 AM
post Re: Drsstc 3
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 16, 2019, 10:34:46 PM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
Mads Barnkob
August 16, 2019, 10:26:19 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 16, 2019, 10:19:18 PM
post Re: [Development] Project of an SSTC driver.
[Solid state Tesla coils]
Mads Barnkob
August 16, 2019, 10:07:31 PM
post Re: Suitable capacitors and switches? 10kV
[Capacitor banks]
T3sl4co1l
August 16, 2019, 09:28:35 PM
post Re: Suitable capacitors and switches? 10kV
[Capacitor banks]
ElectroXa
August 16, 2019, 09:17:04 PM
post Re: ESAB Power TIG 200 Welder Teardown
[Electronic circuits]
T3sl4co1l
August 16, 2019, 09:14:36 PM
post ESAB Power TIG 200 Welder Teardown
[Electronic circuits]
Mads Barnkob
August 16, 2019, 08:03:18 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
August 16, 2019, 01:49:53 PM
post Suitable capacitors and switches? 10kV
[Capacitor banks]
MrFox
August 16, 2019, 12:21:36 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 16, 2019, 11:22:45 AM
post Re: Small Phase change build R600a
[General chatting]
DashApple
August 15, 2019, 06:23:40 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
rikkitikkitavi
August 15, 2019, 06:17:55 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 15, 2019, 01:51:04 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
August 14, 2019, 07:05:57 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Bert911
August 14, 2019, 03:42:34 PM
post Re: Van de Graaf is leaking charge
[Static electricity]
Patric
August 14, 2019, 02:56:49 PM
post Re: Van de Graaf is leaking charge
[Static electricity]
ElectroXa
August 14, 2019, 01:42:21 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
erdal
August 14, 2019, 12:53:10 PM
post Van de Graaf is leaking charge
[Static electricity]
Patric
August 14, 2019, 09:22:21 AM
post Re: Drsstc 3
[Dual Resonant Solid State Tesla coils]
oneKone
August 14, 2019, 04:39:11 AM
post Re: MMC orientation and variac
[Spark gap Tesla coils]
thedoc298
August 13, 2019, 07:10:31 PM
post Re: MMC orientation and variac
[Spark gap Tesla coils]
MRMILSTAR
August 13, 2019, 05:17:23 AM
post MMC orientation and variac
[Spark gap Tesla coils]
thedoc298
August 12, 2019, 09:54:35 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
erdal
August 12, 2019, 08:40:16 PM
post Re: Small Phase change build R600a
[General chatting]
Hydron
August 12, 2019, 07:27:23 PM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
klugesmith
August 12, 2019, 09:18:15 AM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
shrad
August 12, 2019, 09:06:34 AM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
klugesmith
August 12, 2019, 09:02:38 AM
post Re: A problem solved with hand tools
[General chatting]
klugesmith
August 12, 2019, 08:29:20 AM
post Re: Ebay [US]: MITSUBISHI CM300 1200V-300A IGBT (30$ a piece)
[Sell / Buy / Trade]
oneKone
August 12, 2019, 05:25:24 AM
post Re: Ebay [US]: MITSUBISHI CM300 1200V-300A IGBT (30$ a piece)
[Sell / Buy / Trade]
acobaugh
August 10, 2019, 08:14:35 PM
post Re: 30% power increase
[Spark gap Tesla coils]
MRMILSTAR
August 08, 2019, 04:18:09 PM
post Re: "LightningStorm" VTTC project
[Vacuum tube Tesla coils]
Bambinz
August 08, 2019, 01:15:11 PM
post Re: Twin System Build
[Dual Resonant Solid State Tesla coils]
Bambinz
August 08, 2019, 12:15:26 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Bambinz
August 08, 2019, 11:58:47 AM
post Re: [Development] Project of an SSTC driver.
[Solid state Tesla coils]
Bambinz
August 08, 2019, 11:56:51 AM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils]
Netzpfuscher
August 08, 2019, 10:04:39 AM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 08, 2019, 08:35:57 AM
post Re: 30% power increase
[Spark gap Tesla coils]
Mads Barnkob
August 08, 2019, 08:33:01 AM
post Re: Using R/C motors as 3 phase generators.
[General chatting]
Patrick
August 07, 2019, 09:16:57 PM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30