Chronos > Chronos User Discussion
Create light for high-speed shooting 1500w
Nikon1:
How about a frequency generator and some Industry surplus IGBT?
.
https://www.ebay.de/itm/Semikron-SKM145GB128D-SKM-145-GB-128-D-IGBT-Modul-1200V-145A/264509784199?hash=item3d96030087:g:hTEAAOSwA5Rdscvf
https://www.ebay.de/itm/Signal-Generator-PWM-Frequency-1Hz-150kHz-einstellbare-Module-LCD-Rectangle-Wave/153913885321?hash=item23d5fb8289:g:68QAAOSw4PBdpZ7E
SergeyKashin:
First I do not know what it is, I have not encountered such things.
The second gives a maximum of 30 volts at the output, and we need 36 volts
Nikon1:
The IGBT, that big Chip is an High Power Electronic Switch. Basically a Really Beefy Transistor, but with an Input Circut allready (kind of, still would propably need a driver stage for 150khz). The Second one will just generate the Signal, this is not to feed directly into the LED, but to give an control Voltage to the Big White Chip, the IGBT, to make it Switch on and off at 150kHz with variable duty cycle. So you would put the IGBT Power side between the PSU and The LED and connect the Signal Generator to the Signal Input Pins of the Big IGBT an the IGBT will do the Switching on and off. Basically a DIY PWM which can Handle Crazy amount of power. Those Big IGBTs can handle quite some Load.
Nikon1:
--- Quote from: Nikon1 on January 14, 2021, 05:51:05 PM ---The IGBT, that big Chip is an High Power Electronic Switch. Basically a Really Beefy Transistor, but with an Input Circut allready (kind of, still would propably need a driver stage for 150khz). The Second one will just generate the Signal, this is not to feed directly into the LED, but to give an control Voltage to the Big White Chip, the IGBT, to make it Switch on and off at 150kHz with variable duty cycle. So you would put the IGBT Power side between the PSU and The LED and connect the Signal Generator to the Signal Input Pins of the Big IGBT an the IGBT will do the Switching on and off. Basically a DIY PWM which can Handle Crazy amount of power. Those Big IGBTs can handle quite some Load.
--- End quote ---
Ok, nevermind, just looked into the Datasheet of that particular one, and the reccomend only using it up to 20kHz, guess 150kHz will be hard to do with Those bigger IGBTs, cause they propably all are around there. But some Smaller Mosfets should Work.
Nikon1:
https://www.littelfuse.com/~/media/electronics/datasheets/discrete_mosfets/littelfuse_discrete_mosfets_n-channel_hiperfets_ixfb300n10p_datasheet.pdf.pdf
Found one, that will work for sure, but dont know if you can find them for sale anywhere, but there will be for sure something similar, just a powerfull HF-Mosfet. That one here can disapate 1500W on its own if cooled correctly and handle 100V at 300A Load Switching for 200nS pulse Times, so 5MHZ at 50% Duty Cycle. Still pleny of overkill for your use, smaller ones will work too.
Guess for that kind of Power you will propably need to start building some PWM on your own or use multiple smaller ones for each chanel?
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version