only 22mm 6A driver for L21A ,the current is too large for LH351D
Bad news for me :cry:
Apart from this, you mentioned, that a few of your latest driver are now buck-boost (very efficient, i saw you mention 96%, and no PWM at all). What are your current drivers, which work like these?
Currently only this driver has such a high efficiency,
Simon, any new info about lh351d 2700k and 3500k both cri90? Can you get them?
Also have you thought about making a 2.5A driver (like for CSLNM1.23) but with 12 groups and/or 4 modes?
This would be a good option for those who don’t want s2+ hotrods with 5A drivers.
I know you have 2.8A drivers with AMCs, but consider this suggestion too.
I have ordered LH351D 2700K,but not reach to me ,yet.
2.5A driver with 5 groups for KR CSLNM1.23 is in production , i didnt plan to produce it with 12 groups or 4modes.sorry
What are the mode spaces of the 2.5A driver and what sizes of the driver will be produced?
Very large inductor? Not necessarily. Inductor size increases both with conductor width and with inductance value. This specific driver isn't meant to handle 2 cells in series, it is meant to efficiently drive low Vf emitters at high currents with just single cell input. Thus, no large inductance value is required which saves inductor size:
The above inductor is just of 470nH value (very very small), and pretty sure it is a high current handling inductor. It is the exact recipe for a single cell high current buck driver, which on the other hand is a smart choice as it offloads a lot of heat from the driver which otherwise would be burnt in the MOSFETs like it happens in all of the newer Convoy 5A and 6A linear drivers. Given the requirements (low emitter Vf and pretty high current) the above design is a completely logical and smart choice. Kudos for this.
P.S.: 8A? Wow! I think that is a bit “on the edge”, but well…
Brilliant analysis after seeing driver. Kudos for this.
Hopefully, Simon will "pimp" all models to this standard (or better) in his store...
Question for Simon:
Base diameter:
Aditionally, total reflector height is ≈50.5mm.
Is that the Convoy L2/L21A reflector? If so, I'll have to order a spare part. 
[quote=Simon Mao]
Looking forward to that in the S2+ and S12.
Please Simon can we have constant frequency strobes in your lights (e.g. 10Hz) instead of the alternating/two frequency strobes. You are losing lots of sales to light painting photographers by not having a constant frequency strobe in Biscotti and 12 Mode UI.
Hello Simon,
I want to swap emitter and driver on the just arrived Z1, but can’t figure out how to disassemble the driver section?
Can you give me the right direction please?
Thx
Oh boy Oh boy Oh boy :partying_face:
uh ,sorry ,what’s mode spaces?
it’s 17mm diameter
reflectors in L2 and L21A are the same
remove the bezel ,then remove the black lid around the LED,
you can see the brass pill inside.then take it out
Perfect ! I wasn’t sure the pill could unscrew from the top ! (sadly I tore the o-ring of the zooming part when reassembling …)
Screw off the front lens and zoom out (wide Ray) . The rotating head must be crewed down, it comes off through the back of body.
pls leave me your email address via PM, i will take time to record a video
Nice beamshot comparison featuring Convoy’s new L21A CULPM1.... (link to original post on Baidu)
2 examples
1. L21A against the Acebeam L17.....
2. L21A against the Amu XT45 with SBT90.2
With a thankyou to the Baidu FC and the poster G_w_t_F.
Thanks,
Martin