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How to Measure Voltage in an Electronic Circuit

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Part of the video series: How to Build Electronic Circuits

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Summary: Learn how to measure voltage in a circuit in this free home maintenance video.

Views: 3,733 | Tags: design, safety, foundation, how-to, circuit, electronic, diagram, device, electronics, electronic circuits

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About the Expert

Ross Safronoff Ross Safronoff started using a two piece VHS camera system, and then progressed to a 8mm camcorder, then Hi-8, followed by a mini-DV, and finally a Digital8. ... read more

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Video Transcript

How to Measure Voltage in an Electronic Circuit

Hello! This is Ross on behalf of expertvillage.com. How do you measure voltage in a circuit? You have a circuit. It is not powered up yet the LED is off and go ahead and apply the positive to the circuit or you have the negative from my power supply. Start from 12 volts and now I am going to apply voltage to the rest of the circuits so that there is a complete path and it is on. LED is showing on. Here I have a voltmeter and I have it set to DC. This selection knob can be moved depending on what you are using with this multimeter. I am doing voltage in this case and I am setting it to 20 volts, that would be my maximum reading up here. You can adjust it depending on what you are measuring and then to measure voltage it is a parallel connection, meaning I am going to go ahead and just connecting to the same connector that is already there. I am going to connect across to here, and you can see this is the voltage coming in, on the display it is 12.06 volts that is why I have cross this circuit. I will get different voltages in different places I measure. So the use of voltmeter you just place the probes parallel across what you are connecting to either side, that is called a parallel connection.

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