You need a high-voltage power supply for your lab. What’s the best option for you?

3 Cockcroft-Walton generators

If you need very high-voltage power, such as hundreds of kV or even megavolts (MV), you might consider a Cockcroft-Walton generator, which is a type of voltage multiplier that uses capacitors and diodes to increase the voltage of an AC input. A Cockcroft-Walton generator can produce a smooth and steady DC output with a low current. It is also relatively simple and inexpensive to build, as it does not require any transformers or inductors. However, a Cockcroft-Walton generator has some limitations, such as high power losses, low output impedance, and susceptibility to breakdowns. It also requires a high-frequency AC input, which may not be readily available.

4 Marx generators

Another way to achieve very high-voltage power is to use a Marx generator, which is a type of impulse generator that uses capacitors and spark gaps to generate short pulses of high-voltage power. A Marx generator can produce voltages in the range of MV or even gigavolts (GV) with a high current. It is also relatively easy and cheap to construct, as it does not need any transformers or diodes. However, a Marx generator has some drawbacks, such as low repetition rate, high maintenance, and safety hazards. It also produces a non-uniform and noisy output that may not be suitable for some applications.

5 Tips for choosing a high-voltage power supply

When choosing a high-voltage power supply for your lab, it is important to consider several factors, such as voltage and current requirements, output waveform and quality, cost and availability, and safety and reliability. To ensure you make the best choice for your project, you should start by defining your project goals and specifications. After that, compare the pros and cons of different types of high-voltage power supplies and evaluate how well they fit your project needs. Lastly, it is beneficial to consult with experts and peers who have experience with high-voltage power supplies. They can provide valuable recommendations, feedback, common challenges to avoid, and best practices to follow.

6 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?