Byware37
Hello, I have a multimeter.
I set it to 10A.
So, I, clever fellow, have put on my multimeter. (I'm a total beginner.)
Well, there was a spark on the circuit board and the multimeter said 00.006.
after that nothing works anymore.
My gut feeling tells me that I've broken something.
Well, I don't know what I'm doing wrong.
Maybe you, specialist, know what I should do better.
(2 votes)
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Wenn du es so angeschlossen hast, als würdest du Volt messen, dann hast du einen Stromkreis erzeugt, bei dem das Multimeter der einzige Verbraucher ist.
Das ist wie ein Kurzschluss und kann möglicherweise dein Multimeter “frittiert” haben.
Oder es ist gut abgesichert und seine Sicherung innen (Feinsicherung) ist kaputt.
hahahahaha, I hope so.
Yes, the device is off and I have also connected it to something that I don't know but I was told that it is a resistor (I am 100% wrong).
Ja, kompliziert. Ohne Einblick und Wissen über diese Schaltung, bleibt alles Mutmaßung.
I also only have a vague knowledge of electronics. My father was a trained electronics technician.
So I was able to pick up a little bit.
I know the most about mechanics, but that's just what I'm good at.
However, you can watch relevant videos about electronics on YouTube.
My favorite YouTuber is "Zerobrain" and I find his disassembly videos helpful and entertaining.
Measuring volts and amperes:
With volts, you measure what's present at that point. (Like water pressure.) Logically, you go straight to that.
With amperes, you measure a flow. (Also comparable to a water pipe.) The current must flow through the device, and therefore the device must be "built in" to the pipe. Otherwise, the current would flow past it, because the component you wanted to measure allows the amperes to flow through itself. But since this component blocks in one direction (like a check valve), the measuring device in the blocking direction acted as a redirection for the current. It could now flow through the measuring device.
Hello, my question is how do you know something like this or where can I learn something like this.
I don't want to wait for my training… that will take me a few more years.
And I still don't understand the whole thing about the short ending.
So why can you switch it like this with V and others, but with A you have to switch it in between.
Maybe you know a source or can explain it very well.
This is a switching regulator, you can't measure the current there.
You seem to have little knowledge of electronics, so ask your question about your defective device online, explain what the problem is, take informative photos, and then you might get a solution to your problem. You certainly won't be able to solve it yourself without help.
If you simply touch the test probes to a capacitor, a very brief, high current will flow through it and destroy the meter's 10A fuse. A small spark, and it will no longer be able to measure current—only voltage, capacitance, resistance, and continuity. Check the manual to see if there's a compartment where you can replace the fuse.
The particle is a diode in SMD design.
You caused a short circuit across the diode, which may have damaged other components.
There isn't enough current flowing there to damage your meter.
This way, you can't measure amperes. Instead of bridging the components, you separate a conductor and insert the measuring device between them.
However, it is not normally necessary to measure amperes in circuits.
I connected it to that.
https://ibb.co/5nCPbHc
But can you tell me how else I can measure amphora without breaking anything and still get a result?
Multimeters vary in quality in terms of measurement accuracy and setting options.
The really cheap ones don't have autorange and maybe only show two decimal places.
The slightly better ones have autorange and show more decimal places.
For exact measurements you have to dig deeper into your pockets.
In your case, I suspect you have a not-so-expensive device and the battery is dead.
If you want to buy a new one: A multimeter up to 50 euros is sufficient for most simple applications and autorange can sometimes be a real pain.
hds242 das ist mein multimeter.
Die batterie ist zu 100% NICHT leer.
This is better than the one I have – I would just change the battery.
Hi,
With a multimeter on circuit boards, you usually measure voltage. The measuring device has a high resistance, and nothing happens to the circuit board. However, if you measure current, the resistance of the measuring device is very low. You connect it in series, for example, with the power supply. If you use it to measure directly on a circuit board, you may cause a short circuit.
The meter can break if you go over 10A.
warum sagt mir eig. jeder von euch was anderes???
Kurzschluss.
batterie.
da ist nix.
So, wie Du das in dem Bild eingezeichnet hast, hast Du ein Bauteil überbrückt. Strom kann man direkt nur in Reihe messen, nicht parallel zum Bauteil. Je nach Stromstärke, die dabei aufgetreten ist, hast Du das Messgerät zerschossen und die Platine ebenfalls. So misst man NUR Spannung. Bevor man misst, schaut man sich Tutorials an, oder lernt es von Personen direkt, die sich auskennen, wenn man es selbst nicht weiß. Vermute, das war teueres Lehrgeld, dass es so nicht geht.
This won't damage a multimeter.
aber die Platine vielleicht also das ding an das ichs angeschlossen hab?
OK, du hast das Multimeter auf den 10A-Bereich gestellt, und hast was an das Multimeter angeschlossen.
Soweit so gut. Was denn.
And you should stop doing that. What you always do is bridge the component, because an ammeter has a low internal resistance. This creates too much current on the circuit board, at least for the downstream section. Since your meter and the installed components form a parallel circuit, the total resistance is smaller than the smallest individual resistance—for simplicity, let's assume 1 ohm. With an applied voltage of 12 volts, 12 amps flow too much for the meter and definitely also for the circuit board.
Without basic knowledge, you should stay away from such things.
ja, nur kutz halt
Du hast also noch nichts gemessen.
I just turned it on again and tried.
But it works really well and the multimeter shows a number that stays on for 1 second and then disappears again.
It gets so warm that the tips stick to the thing.