After my embarrassing gaffe with the contactor coil/ammeter yesterday I figured what the heck, I'm on a roll...ask more questions.
I won a Tamura 24VDC 2.4A power supply on ebay. It arrived today and I was surprised at the size & weight. The thing is almost 6 inches square and weighs 4 1/2 lbs! Why does it need the huge transformer? Why all the other electronics? I recognize the bridge rectifier & the big capacitor but what's with all the other electronics....and the power transistor on the bottom? Please reduce my ignance and educate me; the Cliff Notes version.
ps: Not everyone makes a killing on ebay. No other bids and it sold for $5 plus $10.15 shipping. The postage sticker on the box read $16.95. The fellow definitely gets positive feedback.