Calculation current trough resistors

And one another test with adapter 450 mA. I cut red wire and put probes in circuit. That results with zero. So, it seems must be load there and I waa added a phone to charge. Showing changeable number 0.04, 0.03, 0.04, 0.03.. and repeat (not stable), at 5A scale.

But 450 mA must be 0.4 A (0.45), not 0.04, right?

If you connect that 450mA charger to 16A circuit breaker, does it draw 16A?

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Not sure that I know what you mean :frowning:

You fire it straight, like from a gun!

This is my fourth multimeter test, and my own new one.

Also on 10A scale show 0.01A, which means 16 mA=0.01 (with one missing diggit will be 0.016).

That's why the 133B would have been a good choice.

But, yay! good job!

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That current draw is from the load, not from supply.
If you have 10mA load, it draws that even if you have 1000000mA supply.

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Thanks guys for solving my problem. I made credits for you!

I hope that topic will help somebody one day.

I invite you all to join my interesting and challenging project that I have started. I just changed the schematic by adding an LDR in front of all the LEDs and you must tell me is that shematic is good. I will need help, because, without you, I will not succeed.

Thank you all for your efforts.

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danyCro.

Credits_28112024
@PaulRB @kmin @jim-p @david_2018 @runaway_pancake @EmilyJane @build_1971 @JohnRob @Wawa @TomGeorge

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Those resistors are 1k, 2k and 10k. So your readings are correct!

Which # Post @build_1971 ?

Post #32...

Yes, 3 multimeters measure good a voltage, resistance, but not amperes :slight_smile:

This new, fourth one (UT-131C), does it right :slight_smile:

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