Questions tagged [voltmeter]
A voltmeter, also known as a voltage meter, is an instrument used for measuring the potential difference, or voltage, between two points in an electrical or electronic circuit. Some voltmeters are intended for use in direct current (DC) circuits; others are designed for alternating current (AC) circuits. Specialized voltmeters can measure radio frequency (RF) voltage.
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Determining Suitable TRMS Voltmeter Specs for Modulated Signal Measurement
I'm seeking advice on selecting a TRMS (True RMS) voltmeter suitable for measuring the voltage across a resistor with a modulated signal. Here's the scenario:
I need to measure the TRMS voltage across ...
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What power supply should I design for a wide range voltmeter? [closed]
I'm trying to make a 3 digit AC voltmeter that could display the voltage it draws it's power from. It should be able de measure voltage from 50-500 Vac or so and should mostly be used at around 230 ...
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Difference in voltmeter reading for series circuit and parallel circuit
Assume that we have two components, R1 and R2, that we wire in series. Assume that the voltage across R1 is 10 V, and the voltage across R2 is 30 V.
We can illustrate this case with the following ...
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Scalable Voltage Display
I am trying to create my first PCB, and I am trying to measure and display scaled voltage and current output from a few different sensors on several seven segment displays.
For example, one of the ...
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Circuit current flow
I have a question which might be somewhat classed as newbie but I may have massively overlooked this concept and changes my understand greatly if true.
Looking at the image, the voltmeter measuring ...
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Understanding input pins [closed]
I am trying to gain a better understanding of input pins. As per my current understanding, they act as a voltmeter with super high resistance and are connected to the ground on one side. When ...
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Reading voltage across Christmas light wires, multimeter shows erratic readings
I am attempting to splice a simple on/off switch into a strand of Christmas lights.
Previously, I separated the two wires and cut open the one marked with dots, expecting it to be the positive/live ...
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Peak voltmeter detector explanation
I'm designing a peak sinusoidal and impulse detector, based on the old design of a peak voltmeter designed by Haefely. I have the schematic, but I can't understand how this circuit works. The large ...
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Dual Slope integrator voltmeter improvement in Design
So, I'm attempting to design a dual-slope integrator voltmeter. I have the following block diagram so far.
Now an AVR microcontroller will have an ADC pin in the range of 0-5 Volts . So negative ...
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Measuring Inverting Op Amp config and not getting desired output (practice)
I am a year 2 EE student and I'm still struggling with getting simulations to work in practice.
Components:
10k resistor x2
Arduino
LM741 Op Amp (pinout: https://www.ti.com/lit/ds/symlink/lm741.pdf)
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Voltage in a Short Circuit
I am very confused about voltage in short circuit.
Let's suppose there is a 6 volt battery and both ends of it are connected with the same wire and it's short-circuited.
Then because resistance of ...
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Voltage divider circuit for DC voltage measurement with protection against AC voltage?
Need some help with making a simple voltage divider to sense DC voltage of 0-30 V range with my DAQ which accepts 0-10 V analog input.
I was wondering if the input voltage is by mistake an AC voltage, ...
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Can I use this voltmeter / ammeter without the shunt supplied along with it?
I bought this voltmeter online.
It does not show current.
Do I need to use 10 A load for some reading or it will work for lower amps also like 1 to 2 A?
From the product details:
Measure Current: ...
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How can some multimeters automatically detect and measure the AC and DC voltage and current?
I was wondering how there are multimeters that are able to measure voltage and current AC or DC automatically without setting the reading on AC or DC.
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Measuring voltage across a rheostat
I want to measure the voltage across a rheostat. For this purpose I connected a voltmeter in parallel to it, but even on turning on the circuit there was no deflection in the voltmeter whatsoever. ...
