Tag Archives: Capacitor

5kJ capacitor bank, 1.5kJ BANG test at end!

For now all details during development and testing can be found on the forum thread: https://highvoltageforum.net/index.php?topic=25.0 35 capacitors in series, each 450VDC/1000uF, for a 48 uF bank with a voltage rating of 14000VDC, making it able to store roughly 5kJ.

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Kone elevator 45 kW motor drive teardown

This is a Kone KM997160 variable frequency motor drive that is developed and used for elevators.  Kone has a long history of their own motor drives that came in more or less atypical enclosures compared to other variable frequency drives. … Continue reading

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Snubber capacitor selection for Tesla coils and inverters

This is chapter 6 of the DRSSTC design guide: Snubber capacitor When we switch on and off very large peak currents in a DRSSTC, residual energy will be trapped in the circuit stray inductance of the switching devices and busbar, that causes … Continue reading

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DC bus capacitor selection for Tesla coils

Chapter 4 of the DRSSTC design guide: DC bus capacitor The DC bus capacitors are the main energy storage for a DRSSTC inverter, it is important to have the energy needed for high BPS operation of the DRSSTC and the … Continue reading

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Another LCD TV repair

I repaired a Sodium LWD400-SI 40″ LCD TV, another case of defective capXcon capacitors that was sitting in a too hot power supply. http://kaizerpowerelectronics.dk/general-electronics/sodium-40-lcd-tv-repair/

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Sodium 40″ LCD TV repair

Introduction A friend of mine had this defective TV set and wanted me to take a look at it. When plugged in the red led would light up and you could power it on to get a green led, but … Continue reading

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DRSSTC design guide

Introduction to the guide This is a guide that aims to explain a few in depth details and best practices that one should have in mind when designing and building a Dual Resonant Solid State Tesla Coil (DRSSTC). It is … Continue reading

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4kJ capacitor bank videos

This is the first test of short-circuiting 1800VDC from a 2500uF capacitor through a mini circuit breaker to see what kind of damage a high energy surge current do to the protective equipment in electrical installations. 4kJ of energy released … Continue reading

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Good MMC capacitors

Here is a list of capacitors tested by the high voltage community to be known to withhold the use as primary capacitor in Tesla coils. Capacitor specifications are taken from data sheets at 100kHz and some values for peak current, … Continue reading

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24 kV Marx generator

Introduction This was my first high voltage circuit that eventually led me into building other high voltage generators, supplies and Tesla coils. A Marx generator works by the principle of charging up a number of capacitors in parallel and when … Continue reading

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