# Why can it double the input voltage

• T.Duncan
In summary, the conversation is discussing a circuit and the OP is asking for help with understanding it. They are advised to move the question to the homework section and are given some suggestions on how to approach analyzing the circuit. The conversation also includes a reminder to show their work so far.
T.Duncan
the circuit is shown at the attached file.

#### Attachments

• voltage doubler.JPG
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Is this a homework question? If you know how AC voltage sources, diodes and capacitors all work then the answer should be obvious to you.

Move it to the homework section under intro physics and it will be answered in an hour or so...

interested_learner said:
Move it to the homework section under intro physics and it will be answered in an hour or so...

I don't think anyone on this forum is into the habit of doing homework for other people. There is an INCREDIBLE amount of help available if the OP is willing to put forth effort.

Some suggestions:
a)
Before trying to analyze the circuit think first how voltage wave-form on C2 must look like (Doubling the voltage does not mean that waveform of source and Vout are identical)
b)
Pay attention to point "2" of the circuit.That's crucial.When D1 conducts it's potential is effectively transferred to the bottom of C2.

## 1. Why does doubling the input voltage result in a higher output voltage?

When an electrical device or circuit is designed to function with a specific input voltage, it is also designed to transform that input voltage into a higher output voltage. This is typically done through the use of a step-up transformer, which has a specific ratio for increasing the voltage. So when the input voltage is doubled, the transformer will also double the output voltage, resulting in a higher voltage output.

## 2. Can doubling the input voltage damage the device or circuit?

In most cases, doubling the input voltage will not cause any damage to the device or circuit. However, it is important to check the specifications and limits of the device or circuit to ensure that it can handle the increased voltage. Exceeding the voltage limits can lead to overheating, component failure, or other forms of damage.

## 3. How does doubling the input voltage affect the current?

In most cases, doubling the input voltage will result in an increase in current as well. This is because the device or circuit is designed to maintain a constant power output, so when the voltage is increased, the current must also increase to maintain this balance. However, it is important to note that the current may not double exactly, as there may be other factors at play such as resistance or efficiency.

## 4. Is there a limit to how much the input voltage can be doubled?

The limit to how much the input voltage can be doubled depends on the specific device or circuit in question. It is important to check the specifications and limits of the device or circuit to ensure that it can handle the increased voltage. Additionally, it is important to consider the effects of doubling the voltage on other components in the circuit, as they may not be able to handle the increased voltage.

## 5. Are there any safety precautions to take when doubling the input voltage?

If you are planning on doubling the input voltage of a device or circuit, it is important to take proper safety precautions. This may include wearing protective gear, working in a well-ventilated area, and ensuring that all connections are secure. It is also important to have a thorough understanding of the device or circuit and its limits before attempting to double the input voltage.

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