Harold Mandel
¿ªÔÆÌåÓýSirs, ? Only a rotating armature easily produces a sine wave. ? Most inverters produce square waves, but some expensive types produce a ¡°modified sine wave.¡± ? If you were to visit a power plant you will see the main dynamo is a D.C. generator that energizes a set of rotary alternators, spinning at 60 Hertz in America and at 25 Hertz in the subways of NYC¡. ? Hal Mandel W4HBM ? From: ham_amplifiers@...
[mailto:ham_amplifiers@...] On
Behalf Of Robert B. Bonner
Sent: Monday, January 15, 2007 5:15 PM To: ham_amplifiers@... Subject: RE: [ham_amplifiers] hi power mobile ? I was looking this over, I noticed it is 50 Hz power.? Dometic sells massive quantities of product in the USA.? I have some of it on my RV. ? The 7KW unit is not that small, look at the photos it is a HV 3 Phase at least 230V alternator the size of a 200 AMP 12V unit. ? The ¡°BOX¡± is a inverter or external regulator.? They say it provides solid sine wave power.? SO you wont get that from a spinning alternator, so it is electrically making the sine wave in the box. ? Where¡¯s 60 CYCLE????? I¡¯d buy one.? I mean I suppose I could use 50 HZ power but really¡? ? BOB DD ? From: ham_amplifiers@ ? This looks like the solution: ?
? The 7 kW version really appeals to me. Although too small to reach my final goal (10 kW out /m) ist brings me a good step further. Amazing how they squeeze 7 kW out of a compact alternator. ? Cheers, Dick PA3DUV ? ? |