- #1
Homo sapiens sapiens
- 15
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Hello, I have the following question, I am trying to build a home made hot air gun for electronics soldering, my approach was with a modified Microwave oven transformer, multifilar 12mmxmm copper cables, and a 15cm stainless steel tube, the air is pumped from a powerful aquarium air pump. The air gun works, but has some wire and transformer over heating problems. In my quest to understand why the wire and transformer heat so much I wanted to measure the power delivered to the load(this is the stainless steel tube, has high resistivity has far as I know), The only problem in measuring the power with a volt meter is that the current is far to high to be measured with a voltmeter, and measuring the voltage makes me had some doubts. Te secondary of the transformer is the tick copper cable, the voltage induced in the secondary circuit is about 3.3V if measured with no load. My question is, if I connect the multmeter to the extremes of the stainless steel tube to measure the voltage, am I measuring the voltage in the tube or am I measuring the voltage in the copper wire.
Putting it in a mathematical way: emf=R_load * I + R_wire * I, I know that emf is about 3.3V, I would like to know how to measure V_load and V_wire with a multimeter.
Thanks very much for reading and thinking about my problem!
Putting it in a mathematical way: emf=R_load * I + R_wire * I, I know that emf is about 3.3V, I would like to know how to measure V_load and V_wire with a multimeter.
Thanks very much for reading and thinking about my problem!