Sensor microwave leakage

[Christophe]

That is what I thought ... not very accurate the contraption ...

[elephant]

you want to be cooked alive? not us!

to a lesser extent, when you see all the hay that has been done on the possibility of GSM dangers radiating several watts, you imagine the effect of leakage of a magnetron 1200 watts.

[Leo Maximus]

Cobbled this thing last night!



It's a homemade microwave detector tinkered with "drawer bottoms".

It uses a galvanometer 50 microamperes 1N23 a detection diode (up 12 GHz band X), a capacitor 100 picofarads and an antenna manufactured with rigid 2,5 mm² wire.




The 1N23B detection diode microwave. ceramic case and gold.

Tests last night on the microwave oven and GSM phones: the result is very satisfying because this tinkered detector works remarkably well. The device is not calibrated, having no standard source. So I use the graduations of 0 to 50 microamperes.

On the microwave oven, the largest leaks are at the level of the door and above the ventilation where it greatly exceeds the maximum level (50) and also at a very specific point of the door (!!!? ??). The field is not constant and can vary greatly during operation. At the walls, on the sides, the measured level is almost zero. Beyond 1 meter is hardly detects nothing.

I made measurements on 2 mobile phones, Motorola and Sagem.

At the time of starting and stopping of the phone, it has a very high pulse is the maximum leakage measured on the microwave oven. Then the level corresponds roughly to that measured in contact with the oven door (!!!).





On both phones, I noticed that the level of microwave is about twice as high outside (or hand side when using the phone) than inside (heads side). I guess this is by construction.

I will make further measures, if any suggestions, comments, ideas, they are welcome. Hoping to be helpful ...

[Christophe]

Ah, not bad!

But electromagnetic scale it gives what?

[Leo Maximus]

Ah, not bad!

But electromagnetic scale it gives what?

The simplest would be to position a "red zone" on the galvanometer from a calibrated detector.

This is the problem of all measuring devices, at the beginning it is necessary to calibrate from a standard. I will try to find that on forums electronics.

[Remundo]

It is nice your Leo Maximuls system !!

To measure higher fields would require that your antenna is interchangeable, the more the field is stronger, we must reduce the section of the thread, or not to copper (to increase its strength and therefore lower the current).

You would therefore need a "series of wires", playing a role comparable to that of "gauges" on a multimeter.

[Remundo]

I think a more simple trick ...

If you have a box of resistors, put it in series with your antenna. As soon as the galva switches to the right, increases the resistance ...

[Christophe]

The simplest would be to position a "red zone" on the galvanometer from a calibrated detector.

So it would be straight to you? This is a good thing.

Otherwise I present here is premiering the next product of the shop: https://www.econologie.com/shop/capteur- ... p-174.html

Sensor microwave leakage



* Beach: 0-9.99mW / cm²
* Value Warning: 5.0mW / cm²
* Accuracy: ± 1dB
* Power supply: alkaline battery 1 9V type E-block (6LR61C, incl.)
* Temperature: ° C ~ 0 40 ° C
* Ambient relative humidity: 0 85% ~%
* Dimensions: 160 60 x x 42mm
* Weight: 150g
* Content: detector, manual, battery, pouch

Available from July 8 50 for under € ... (yes!)

[Leo Maximus]

So it would be straight to you? This is a good thing.

Linear? I do not think, it does not exist ... Although, given the used detector diode type, the tape must be quite extensive. Anyway, I did not need to have a specific thing.

Thank you, Remundo for suggestions, I'll see to use different types of antennas but I'm no expert!

[Christophe]

Uh then I reformulate "Linear" if you prefer ... in other words: the deviation is not logarithmic or is it?