In a recent exchange between K2VCO and KM1H, they describe what sounds like to me a good way to test out an unknown transformer's power rating. I have seen hand-held stand-off, IR responding thermome
I bought one on Ebay for under $30 or so - a gun type device with an LED for aiming. Take a look on eBay for item #110937511368. Seems to work well (I used it for monitoring temperatures of devices i
REPLY: Those things are great. I use one in the kitchen for cooking all the time. If you want an interesting lesson in physics, go outdoors on a nice warm day and point it straight up. You'd expect t