Sure, you can run a 1KW room heater from 110V... so what if the line voltage sags to 100V on that circuit.. the heater will just deliver a bit less heat.
If the voltage sags to 100V you are likely to cause a serious fire. A 1 KW heater will draw roughly 10A ... 10A at 20 to 25V (the drop in the lines/outlet/etc.) represents 200 - 250W dissipated in a closed space behind your walls, typically close to combustible studs and drywall. If you see significant voltage drops on a circuit like that, you had better get it fixed promptly or hope your homeowners insurance and smoke detectors are both working 110%. 73, ... Joe, W4TV On 2014-12-24 11:00 AM, Ray Sills wrote:
Another consideration for a KPA1000, would be the almost certain need for 220V power. Fine and dandy if it's already in the shack, but certainly an extra cost. Sure, you can run a 1KW room heater from 110V... so what if the line voltage sags to 100V on that circuit.. the heater will just deliver a bit less heat. Or my vacuum cleaner (which draws 12 A) works fine on about 110V. But, a linear amp will want to see a pretty stiff power supply to maintain linearity. 500 W is pretty much OK on household 110 V branch circuits. And, as others have pointed out... the whole amp with power supply fits into a K3 sized case. Pretty slick engineering, I say. But, I'm a QRP guys, so all this discussion is a theoretical item for me. :) 73 de Ray K2ULR KX3 #211 ARL sixty one ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
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