This is not just any cookie box, its Fesz's cookie box :D very nice
@pa4tim2 жыл бұрын
I repaired a coertivity meter and when repaired the owner demonstrated what happened with the coertivity from metal if you bend it. The effect was big. He told me that was the reason you never should bend or dril mu-metal after its heat treatment. Thanks for an other interesting video
@weinihao36322 жыл бұрын
What was the working principle of the coercivity meter you repaired?
@pa4tim2 жыл бұрын
@@weinihao3632 I do not exactly know because part of the system was a black box (no schematics from those boxes) and known to be good. It is a 19" amplifier/controller/PSU and 3 external cabinets. One is a big extremely heavy cabinet on wheels (size dog-house) with a huge coil inside used to magnetize the sample. There is also a "probe" inside. As far as I know it is a small coil used to measure the remanent magnetic field (If I use the correct term ) In short, it generates a magnetic field and measures the BH curve of metal samples. The meter has several modes, the one they used gave a value in A/m (if I remember well) The company who owns it develops things like electric motors for third parties. Something very rare, they had schematics, so there was no need for reverse-enginering. (95% of what I have too repair (my day-job) has no schematics)
@monoki8708 Жыл бұрын
fire hot loop explanation yo
@nargizatoboeva12872 жыл бұрын
Related to EMC: it would be very interesting to see how to simulate active EMI filter in LTspice
@rjordans2 жыл бұрын
Interesting analysis, thanks!
@ChainsawDNA2 жыл бұрын
Excellent!
@barjan822 жыл бұрын
I like your cookie-box based emc chamber 😀😁
@mrechbreger2 жыл бұрын
Thank you for your videos!
@Stefanev2 жыл бұрын
Another great video! Thanks.
@shams350z2 жыл бұрын
Please do a video on various snubber circuits on switching power supplies. Pros/Cons of snubbing and substitute of it.
@FesZElectronics2 жыл бұрын
That's an interesting topic! I will try to get to that at some point. Thanks for the suggestion!
@sirousmohseni42 жыл бұрын
Good video
@MrThoriam2 жыл бұрын
Can you make a video about your near field probe? Its awesome! ;).
@FesZElectronics2 жыл бұрын
I did something a while back :D kzbin.info/www/bejne/omO8hGSpa62rfrc and kzbin.info/www/bejne/iWOaq56VfM9spLc
@aboukhaleed13402 жыл бұрын
Hi I want from you a video about how I can design a stereo modulator for fm transmit using none ic cheap
@AntonioDellaRovere2 жыл бұрын
Sorry, isn't it the non-linearity of the diode that is causing all the noise? Just think of diode ring-mixer, where the high frequency mix products are actually wanted..
@FesZElectronics2 жыл бұрын
I guess that is a different way of looking at things - in the diode mixer, you start off with a sine wave and process it using the diode; with a switching converter, you start off with DC and chop it into bits using switches (either mosfets or diodes); it does not have to be a diode, it can be a mosfet and you will get the same amount of noise.
@不知所错2 жыл бұрын
how did you print your boards??
@FesZElectronics2 жыл бұрын
I use the tonner transfer method. I tried covering this a long long time ago kzbin.info/www/bejne/i5rFmX-tqcd1h7M