How does a LED strobe light work?

[jurc]

Hello,
I have just seen a LED strobe light (for use in aircraft) from Aveo Lights. This pic is the back side of it:

Link: **broken link removed**

Now the big question is, how does this work? I'm thinking it's a multi channel buck converter, but these strobe lights are said to draw 1.5A continious, 2.5A strobe. If it's a simple buck converter, It cannot draw current when the LEDs are not on (between the pulse). Also, drawing current between the pulses would require a large capacitor, but there seems to be none here. Any ideas?

Regards!

 

[dick_freebird]

There are 6 evidently high value ceramic caps there.
Those are probably the charge reservoir for the strobe.
The "off" period may be charging caps for the on time.
In the interest of uniformity LED lights are often tall series
strings which means they have to pump the voltage
much higher and then use power FETs to switch. The
pumping means a lot of low-voltage current to charge
the reservoir up in time for the next pulse.