ANTENTOP- 01- 2015 # 019

Experimenters with Microwave Oven

Almost everyone has at home a Microwave Oven. It is possible make some experimenters with it. Most interesting and visual experiment is Experiment with Bulbs. We may find how microwaves effect to incandescent (filament) and CFL bulbs.

I bought at nearest Walmart a kit of bulbs for repair of my Christmas-tree light decorates. Figure 1 shows the kit. The kit contains 5 bulbs for 2.5- 3.0- V. Figure 2 shows the bulb from the kit. For me it was interesting the behavior of the bulb in my Microwave Oven. I put the lamp in the oven with some meals and turn on the oven. The bulb is flashing very brightly according to oven's magnetron pulse radiation. The lamp is flashing anywhere in the Oven- at the turning plate or being sealed at the Oven's door. Adding several centimeters of wire to the bulb leads may kill the bulb in the oven. Leads of the bulbs may be soldered together at the ends. It is not prevent the Lamp from flashing in the working microwave.

Figure 2 Bulb from the kit for repair Christmas-tree light decorates

Figure 1 Kit for repair Christmas-tree light decorates

Figure 3 20W Probe (A)

Next subject for experiment was a 120V/20W filament bulb. It was lamp from an old microwave. Bare lamp did not flashing in the microwave Oven.Then I added to the lamp leads a loop in perimeter 12 centimeters. The loop was a loop antenna that tuned to 2.45- GHz. The lamp was a load for the antenna. Just remind, that oven's magnetron works at the 2.45- GHz. Figure 3 shows design of the probe. I put the probe inside of the Microwave Oven with some meals and turn on the oven.

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