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Universal constant-current
Involvement:Expert (understands the inner workings) - Ownership:more than 1 month
Pros:Simply schematics and simply adjustment.
Cons:Can work up to 16V, but You must re-solder C1 capacitor (look main picture) to 10mF x 16V
You can adjust the current with a resistor near to C1 (marked R10 = 0,1 Ohm on picture)
to get more current set lower resistance, to set lower current - resolder this resistor with more Ohms))
If You wish to get more current,- You MUST to resolder Schottky (D1) with true 3A Schottky diode.
OtherThoughts:I use it as my Motorbike Main LED light power source.
Bottomline:Nice, well-priced, can be useful if you know how-to re-solder SMD)))