Hi NormK and MF,
Buck converter is a type of switched mode power supply topology. There are many topology used in SMPS e.g. boost, flyback, buck-boost depends on power conversion. I have similar buck converter on hand that I can try. I knew this particular buck converter doesn't step up the voltage. Boost converter is the one which could step up the input voltage. I will test this buck converter if we can adjust the output voltage down. For example if I supply it with 12V input, I will check if I could adjust the output from 1.3V up to 12V +2.5% regulation. As I mentioned about dimmer, this buck converter will do the job if we can adjust the output voltage down to half or 6V. The maximum output current anyway is good enough for the 18W bar lamp which is 2Amps.
Cheers,
CM
