How does this voltage multiplier work?

In summary, the misconception that current disappears when it meets ground is false. Voltages are always measured between two points, and the ground symbol just signifies the arbitrary zero point. The key is to remember that current always flows in a closed path, back to its starting point. A Cockroft-Walton voltage multiplier is an example of how capacitors charged on alternate half-cycles behave like high-voltage cells in series. The voltage output is between 4Us and the ground symbol. The belief that electricity always wants to go to ground should be avoided, as demonstrated by the 0V reading between a battery's positive terminal and a grounded metal pipe.
  • #1
MasonJ1989
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ALzsJk
With ground where it is, how does current travel the rest of the circuit? I thought that as soon as current met ground it was gone
 
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  • #2
800px-Voltage_Multiplier_diagram.PNG
 
  • #3
MasonJ1989 said:
I thought that as soon as current met ground it was gone

No that is a misconception. Voltages are always voltage difference between two points. The ground symbol just identifies the arbitrary place that we label zero volts. If you always remember to name the two points where you measure voltage, then you can remove the ground symbol from the circuit.

The important thing to remember is that current always flows in a closed path, back to the point where it started.
 
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  • #4
anorlunda said:
No that is a misconception. Voltages are always voltage difference between two points. The ground symbol just identifies the arbitrary place that we label zero volts. If you always remember to name the two points where you measure voltage, then you can remove the ground symbol from the circuit.

The important thing to remember is that current always flows in a closed path, back to the point where it started.

That's useful thank you
 
  • #5
MasonJ1989 said:
800px-Voltage_Multiplier_diagram.png
Look up ‘Cockroft-Walton voltage multiplier’. The caps are charged on alternate half-cycles and end up behaving like high-voltage cells in series. The high voltage output is between 4Us and the ground symbol.

And delete the concept that ‘electricity always wants to go to ground’ from your cortex... Check the voltage between a battery +ve and a grounded metal pipe. 0V.
 

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Related to How does this voltage multiplier work?

1. How does a voltage multiplier work?

A voltage multiplier is an electronic circuit that uses capacitors and diodes to multiply an input voltage by a factor of two or more. It works by storing energy in the capacitors and then releasing it in a series of stages, with each stage doubling the voltage.

2. What components are needed for a voltage multiplier?

To build a voltage multiplier, you will need capacitors, diodes, and a high-voltage power supply. The size and type of these components will vary depending on the desired output voltage and current.

3. What are the advantages of using a voltage multiplier?

A voltage multiplier can provide a higher output voltage than a traditional transformer, and it does not require any moving parts. Additionally, it can be more cost-effective and efficient in certain applications.

4. Are there any limitations to using a voltage multiplier?

One limitation of a voltage multiplier is that it can only produce a DC output. It also requires careful design and precision components to work effectively, and it may not be suitable for high-power applications.

5. How can I calculate the output voltage of a voltage multiplier?

The output voltage of a voltage multiplier can be calculated by multiplying the input voltage by the number of stages in the circuit. However, there may be some voltage drops due to the diodes and capacitors, so the actual output voltage may be slightly less than the calculated value.

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