Teleste AC2000, teardown of a 862 MHz cable TV amplifier

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 …

Kone elevator control/power electronics panel teardown

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 …

SSTC and DRSSTC musical modulator

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 …

Kaizer DRSSTC III update #7 – Show and tell

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 …

CM600DU-24FA IGBT – Removal of RTC over-current protection

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 …

Kaizer DRSSTC III update #6 – First full power test after removing RTC

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 …

Astro HVO-Vario G 38, teardown of a 862 MHz cable TV amplifier

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 …

Finished project: Merlin Gerin PM700 power meter

Two days ago I conducted the first successful resistive load test of a 3 phase power meter that can measure voltage, current, power consumption, harmonic distortion …

Finished project: 3 phase 13A Lübcke variac

Yesterday I conducted the first successful resistive load test of a 3 phase 13 A variac stack that has been enhanced with safety and monitoring …

Winners of a DRSSTC UD2.1 board

Seven users entered the lottery for a board by leaving a comment with a email address and through a gentleman agreement subscribed to the various channels …