1. Is it normal to have a voltage drop let's say 3.7 boosted to ~12v, under load with the above small led chunks, it drops down to ~8v?4. While using C, initially set to ~12v, under load it dropped to ~8v, took the led off and multimeter shows roughly about ~9.5v when no load. Is this normal?
2. What about D while I was trying to adjust the voltage range, the minimum I could go was 12v, max is 50v, could it be already busted?3. While was wiring with D as the boost to ~12v, I tried to ramp up the voltage, multimeter didn't show any changes, neither do the leds shows the sign of getting brighter, after I taken off the led from the contact, multimeter straight shows the max voltage which is 50v prior to question no.2. What really happened here?