Teardown

Over 50 videos and articles of high voltage, high power equipment that is taken apart and shown what is inside and how it works! X-RAY, UPS etc

Nokia Siemens Networks Flexi WCDMA teardown: integrated Doherty amplifier (part 5)

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Nokia Siemens Networks Flexi Multiradio BTS is a GSM/EDGE, WCDMA/(I-)HSPA, and LTE base station. It is used in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Teardown of a NXP BLD6G22L-150 integrated Doherty amplifier from a Nokia Siemens Networks Flexi WCDMA base station. The previous teardowns that are also highly […]

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Nokia Siemens Networks Flexi WCDMA Teardown: Power Amplifier (Part 4)

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Nokia Siemens Networks Flexi Multiradio BTS is a GSM/EDGE, WCDMA/(I-)HSPA, and LTE base station. For use in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Part 1: System station, Part 2: Power Amplifier and Part 3: Antenna The following 25 minute video shows the teardown step by step with explanations, high

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Kone elevator 45 kW motor drive teardown

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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. With this KDM model, they do however take the same form as many other drives

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Teardown video of HP SureStore DLT 818 tape backup station

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Teardown of HP SureStore DLT 818 tape backup station that has room for 6 cartridge’s and can auto load. If you like teardown videos, check out the complete list of teardowns I have done. HP SureStore DLT 818 Description The HP SureStore E DLT Autoloader 818 is a cost-effective high-performance tape storage solution. This system

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Mysterious failure of a Siemens mini circuit breaker C6A (5SY41)

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From one day to another this mini circuit breaker stopped working, I had been using it wrongly as a on/off switch and was wondering if there was a mechanism inside to disable it after too many on/off switches, as MCBs are only rated for a finite number of operations.

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Teardown video of Eaton PowerWare 30 kVA UPS

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Here is a video from taking apart 3 UPS units from Eaton PowerWare, these are 30 kVA units that was previously described in pictures and text in one of my earlier teardown articles: https://kaizerpowerelectronics.dk/electronics/teardown-eaton-powerware-30-kva-ups/ 

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teleste ac2000 cable tv dropbox amplifier

Teleste AC2000, teardown of a 862 MHz cable TV amplifier

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This Teleste AC2000 is a cable TV amplifier that is configurable through different insert jumpers for setting up attenuation/equalization, diplex filters, return amplifier or a transponder making it remote controllable.  This is a dual 39 dB amplifier in the range from 5 to 862 MHz which enables it of delivering 110 channels.  This particular amplifier

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Kone elevator control/power electronics panel teardown

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This is a Kone Elevator control and power electronics panel dated around 1999-2000 according to stickers and test marks. It does not appear to have had a user interface, unless that was connected to the RS232 port. The front reveals a control board with a -12 VDC, GND and +12 VDC power supply at the

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