Multimeter measuring current

How to measure the current of a circuit with a multimeter.

Measuring current with a multimeter schematic diagrams by electronzap
Measuring current with a multimeter schematic diagrams by electronzap

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Video and Diagram:

Multimeter measurements of current how to DIY tutorial by electronzap electronics

More detailed Diagram

Measuring current with a multimeter schematic diagram by electronzap
Measuring current with a multimeter schematic diagram by electronzap

Measuring simple circuit current video

Goes with diagram.

How to measure current of an electronics circuit with a multimeter by electronzap



Power supply I use in my videos.

Basics

I am only covering digital multimeters on this page, as analog meters are rare these days.

  • As a general rule, don’t measure power supply current directly. Something must limit the current. However, some weak power supplies, such as small solar cells, can be measured directly if the expected maximum current is well below the maximum current setting of the meter, and won’t damage anything else.
  • Open up, or find an open part of the circuit (such as an open/off switch). I like to measure the terminals of an open/off switch that is part of a circuit to measure how much current flows when the switch is closed.
  • Make sure the meter is set to be able to measure more current than you can expect. Too much current going through the meter for a particular setting will likely blow an internal fuse.
  • Connect the probes to the points that you want to measure the current at and read the current on the display.
Related topics:

Other basic electronics topics that you should know before moving on to more advanced topics.

555 timer is an integrated circuit (IC). Being an IC, it has complex circuitry combined in a single package with external pins/terminals to connect to other circuitry. You can easily make all kinds of fun circuits with just a 555 timer and the components covered above, so I think it’s a good component to learn next.

Transistors will probably be the most challenging components to learn. Understanding them will help you understand all of electronics much better, and help you the most in being creative while designing your own circuits.

Other topics:

These pages are still being compiled.