ronald_jansen
New Member
Hello,
I am currently designing a xenon-flasher for lighting a machine vision camera.
The flash frequency should be able to run up to 100Hz
I have already looked at a large number of schematics.
There seem to be two common ways to do it.
The one fires the trigger transformer with a Thyristor. The other uses an IGBT.
The interesting part is, that all the schematics that fire the trigger transformer with an IGBT, also switch the tube with the same IGBT. This wonders me. Why would you want the switch the tube? Such a switch is going to eat some of my precious energy. The tube is not going to conduct any current until it is fired. Afterwards it will automatically switch of when the buffer is empty.
I use a switching power supply to generate the pulse voltage. During the pulse the supply is set to standby, so there is no chance that the tube will remain on on the current delivered by the power supply.
Is is not possible to use the IGBT to switch the trigger transformer only? Or maybe even a FET?
I am currently designing a xenon-flasher for lighting a machine vision camera.
The flash frequency should be able to run up to 100Hz
I have already looked at a large number of schematics.
There seem to be two common ways to do it.
The one fires the trigger transformer with a Thyristor. The other uses an IGBT.
The interesting part is, that all the schematics that fire the trigger transformer with an IGBT, also switch the tube with the same IGBT. This wonders me. Why would you want the switch the tube? Such a switch is going to eat some of my precious energy. The tube is not going to conduct any current until it is fired. Afterwards it will automatically switch of when the buffer is empty.
I use a switching power supply to generate the pulse voltage. During the pulse the supply is set to standby, so there is no chance that the tube will remain on on the current delivered by the power supply.
Is is not possible to use the IGBT to switch the trigger transformer only? Or maybe even a FET?