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 »
Since Martin from ctc-labs.de decided to close down his website, which was all written in German, I asked him for permission to translate and publish some of his content to keep it online and public for others to use. So here is the translated article about his small and simple analog circuit that can be
SSTC and DRSSTC Musical Modulator Read More »
While we had the box open for removing the real-time current control, as you can see in the previous post, I did a walk through of how the coil is put together and what parts have been used. Learn how to build your own Tesla coil and how to make it play music through a
Kaizer DRSSTC III update #7 – Show and tell Read More »
The real-time current control (RTC) that can found in some IGBT modules is a protection against short circuits in f.ex. motor drives where they could have been used. The conditions on which the RTC acts is however sharing area with using IGBT bricks in Tesla coils, as the RTC will never interact while operating the
CM600DU-24FA IGBT – Removal of RTC over-current protection Read More »
After cutting out the bonding wires to the RTC circuit of the CM600DU-24FA IGBT bricks, which we thought could be one of the reasons that we were not able to trip the 1500 A OCD setting, we had a short test run to witness performance. I will do a video with more details of the real-time
Kaizer DRSSTC III Update #6 – First Full Power Test After Removing RTC 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 »
Two days ago I conducted the first successful resistive load test of a 3 phase power meter. It can measure voltage, current, power consumption, harmonic distortion and power factor. Read all about the construction and see all the pictures and video demonstration here.
Finished Project: Merlin Gerin PM700 Power Meter Read More »