What's This? (Difficulty = 1.5)

[TheRic]

Ok, now tell us how it works? Going to guess you can vary the voltage. What is the door bell button for? The switch is to turn the whole thing on/off?! The meter tells you what voltage you have it set for, or the voltage / charge on the battery? Does it still work?

I think diamondman should get some credit he said "Variable DC power supply" back on the third post.

[diamondman]

I've been cheated!

As an ex electrical engineer, I thought the thing looked like some kind of DC power supply, rectifier, charger etc.
I think you should have at least said "close guess"

[cabinetman]

As an ex electrical engineer, I thought the thing looked like some kind of DC power supply, rectifier, charger etc.
I think you should have at least said "close guess"

Sorry about that. I'm a woodworker, not an electronics expert. I don't know what those things are you mentioned. But, CLOSE GUESS, as you said. I thought DC power supply had something to do with the energy producers in our nations capitol.