A look at a box of IGBTs and MOSFETs that I have salvaged from household electronics like microwave ovens, induction stoves, solar inverters, welding machines, car and battery charges and other common high power electronics with switching inverters. The TO-247 IGBTs can be used in a DRSSTC Tesla Coil using the free half- and full-bridge
Where To Get “Free” TO-247 IGBTs and MOSFETs Read More »
This is a short teardown of the smallest UPS I have yet found thrown out. The Belkin Regulator PRO Silver UPS 650VA (model F6C650-SER-SB) uses the battery type CSB HC1221W which has been discontinued. If not obvious, my daughter helped me make this video 🙂 Belkin UPS specifications UPS / surge protector 4 power outlets
Belkin Regulator PRO Silver 650VA UPS Teardown Read More »
This is a complete teardown of a Hitachi L7450 HPLC Diode-Array-Detector. HPLC is short for High Performance Liquid Chromatography. The DAD uses UV light to detect a color spectrum through a liquid flow cell into a linear detector. This liquid analysis method requires a wide range of apparatuses, starting with mixing, pumps, injection, temperature oven
Hitachi L7450 HPLC Diode-Array-Detector Teardown Read More »
This is the complete destruction and teardown of the Masterpact M circuit breaker. It is normally used to protect and control low voltage distribution systems. Some of the M series primary features are: nominal current: 800 to 6300A AC. Breaking capacity from 40 to 150 kA rms. Voltage rating: up to 690 V. My previous
Merlin Gerin Masterpact M16N1 Teardown Read More »
Teardown and on-the-fly analysis of the circuits found inside a Kappa CF15 CCD camera. I got the camera with my Nikon SMZ-2T stereo microscope, that I use for electronics repairs and component identification. The camera was defective and taking it apart really made for a pleasant surprise of complexity and a stuffed enclosure! You might
Teardown of a Kappa CF15 CCD Camera From a Microscope Read More »
Circuit analysis, reverse-engineering and hacking of a Nokia Siemens Networks Flexi Multiradio base station FRGL amplifier. The user Da_Stier from highvoltageforum.net made a deep circuit analysis of the power amplifier, reverse-engineered how it works, built new printed circuit boards to make it run standalone and built a new enclosure for it. Shifting its output frequency
Nokia Siemens 3G Flexi 2.1GHz to 2.4GHz 50W Amplifier Reverse Engineering (Part 3 of 3) Read More »
Introduction I have here a circuit analysis of a 2100 MHz cellular amplifier from a UMTS basestation setup. The initial teardown video can be found in Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Teardown (Part 1 of 3). Video Cellular Basestation Overview The Nokia Siemens Networks FRGL module consists of two 50 Watt amplifier modules.
Nokia Siemens 3G Flexi 2100MHz 50W Amplifier Circuit Analysis (Part 2 of 3) Read More »
I do a teardown and test of a Victron Energie Atlas Combi 12-800. It is a combined battery charger and 230VAC inverter. The battery charger of the Atlas Combi is suitable for a 230 VAC, (50 Hz) mains voltage. The charger works automatically, so batteries may remain permanently connected to the charger, even during winter
Victron Energie Atlas Combi 12V/800W Battery Charger/Inverter Teardown Read More »