I love DC constant current drivers.
The ones I’m using are Convoy’s new 5A and 6A drivers, ramping drivers, Sofirn SP31, SP32, SP33V2, SP33S, SP35, SC21 and C01S. Furthermore, SP35 and SC21 can operate stably with constant current even with an external power supply from USB (excluding turbo). I use SP33V2 as a lumen standard.
I forgot another important thing.
When Anduril is physically turned on, it always starts with 7135 X1 and there is no PWM (however, manual memory mode is OFF). I often use this brightness regularly. It’s also useful when comparing flashlights.
Is there a list of current Convoys that have the 5a/6a drivers? I realized that the store listings don’t always put it in the title/product description, and I had to message Simon for clarification.
Convoy’s 5A and 6A drivers are perfectly linear. It seems to be mainly used for S2 +.
Interesting is the 4-mode driver for the Optimus T2, which works as a constant current boost driver (0.5A) for eneloop and as PWM (1.5A) for lithium-ion batteries.
Convoy’s 5A, 6A, and ramping drivers are constant current driven by current sense resistors, operational amplifiers and FETs. Since it is a linear drop-off, the control is output as heat. Not buck or boost.
The reflector of the S2+ and S3 are the same, so you’ll get the same beam pattern (if you choose the same emitter), except the S3 has a stainless steel bezel, so the beam is probably ringier for the S3.
The S2 (with no “+”) has a deeper reflector than I think any other small “S” series Convoy flashlight, so that one would be different.
Well, in my opinion, the S3 looks better than the S2+, and I prefer stainless steel bezels, so it depends on what you’re looking for.
(My favorite of the small S series is the S2 because it throws further.)