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
Kone elevator 45 kW motor drive teardown Read More »
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
Teardown video of HP SureStore DLT 818 tape backup station Read More »
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.
Mysterious failure of a Siemens mini circuit breaker C6A (5SY41) Read More »
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/Â
Teardown video of Eaton PowerWare 30 kVA UPS Read More »
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
Teleste AC2000, teardown of a 862 MHz cable TV amplifier Read More »
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
Kone elevator control/power electronics panel teardown Read More »
These are highly modular cable TV amplifiers, they are set up by using a wide range of different insert cards with different frequency ranges or options. These are 38 dB amplifiers in the range from 47 to 862 MHz. This particular amplifier is set up for 862 MHz, 42 channels and has a return path
Astro HVO-Vario G 38, teardown of a 862 MHz cable TV amplifier Read More »
Nokia Siemens Networks Flexi Multiradio BTS is a GSM/EDGE, WCDMA/(I-)HSPA, and LTE base station. Used in mobile telecommunication antenna networks. A network that you use daily on your cellphone. Part 1: System station and Part 2: Power amplifier Phased Antenna Array This is an obsolete Kathrein XPol 2-port single band panel antenna. The 2 ports means that
Nokia Siemens Networks Flexi WCDMA Teardown: Antenna (part 3 of 3) Read More »