Category Archives: Electronics

Teardown – Eaton Powerware 30 kVA UPS

I had the chance to take this Eaton Powerware 30 kVA / 27 kW (9355-30-N-7-2x9Ah) uninterrupted power supply apart to look for parts worth salvaging for future reuse in other projects. Looking up the type on the Eaton website we … Continue reading

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Teardown – Schneider Electric frequency inverter ALTIVAR71

I picked up two of there 5.5kW frequency inverters from a scrap yard. Both assumed to be thrown out due to malfunction. I took them home to dismantle them for parts to use in other projects. First we have the … Continue reading

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New online calculator for IGBT gate drive

I added a new online calculator that will help you do the calculations for IGBT gate drive. It is useful for continues wave operation and has a optional input and output for use with Tesla coils like DRSSTCs. Check it … Continue reading

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Old small solar panel project added

I found a little time to put together the pictures, measurements and results of a solar panel I built from broken solar cells for sale on ebay. Not exactly a breakthrough in solar panel development, but more an eye opener … Continue reading

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100 Watt 6P45S amplifier update #2

The latest update to the 100 Watt 6P45S tube amplifier is about a lot of testing and fault finding have gone into the tube amplifier to correct noise and hum issues. It is now in a state where the audio amplifier itself … Continue reading

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100 Watt 6P45S amplifier update

The latest update to the 100 Watt 6P45S tube amplifier is about the new printed circuit boards, installation in the enclosure and a simple signal generator test.

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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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uRADMonitor live from Odense, Denmark

uRADMonitor is a network connected monitoring station, focused on continuous Environmental Radiation Surveillance. This capability is delivered by a digital dosimeter constructed around the highly sensitive Geiger Muller tube SBM20U. This is a uRADMonitor that I have installed outside of … Continue reading

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100 Watt output from 6P45S tube amplifier

The latest update to the 100 Watt 6P45S tube amplifier is the measurements of frequency response from square waves and bandwidth measurements. The prototype is now considered done as it has proved itself capable of outputting 210 Watt peak before … Continue reading

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6P45S tube amplifier prototype

I have completed building and initial testing of a new tube amplifier prototype using the Russian 6P45S tubes in the output stage. This prototype will be used for testing, tweaking and a way to perfect the amplifier before building the … Continue reading

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