The overall efficiency in a domestic microwave oven is very small. Not because the magnetron but because the supplying transformer (assuming the oven is not Panasonic and has no inverter) and the way microwaves are absorbed in the food. Need more details ? On 4/17/07, Warren Jackson wrote: > roughly what is the efficiency of a magnetron tube in a typical microwave? > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist