Schematics, instructions and pictures on how to build high voltage power supplies or projects like flyback transformer drivers.
I give an overview of a 65kW X-ray generator system for a 70 kV X-ray transformer. The full-bridge of 400A 1200V IGBT bricks makes for a powerful inverter to drive the ferrite cored high voltage transformer.
70 kV / 65 kW X-Ray System, Transformer and Inverter – Isolation, Day 12 Read More »
I go through my collection of iron/ferrite core high voltage transformers. MOTs, OBITs, NSTs, PTs and X-ray transformers. Microwave Oven-, Oil burner ignition-, neon sign- potential- and x-ray transformers. I forgot to add the old and new flyback transformers I have… somewhere…
High Voltage Transformers – Isolation, Day 9 Read More »
I show the most interesting high voltage gear and equipment that I need to repair. From manufacturers like Glassman, Haefely and others.
High Voltage Equipment Repair Queue – Isolation, Day 8 Read More »
I flip through the most interesting sections of high voltage gear and equipment from manufacturers like Sebamkt, Megger, Glassman and others. Denmark went into a 2 week corona virus lockdown today. This huge advertising material has been sitting on my desk for far too long. Now was the time to show the content you, my
High Voltage Equipment Catalog – Isolation, Day 1 Read More »
This is a introduction to the differences between AC and DC fuses. I also use a high voltage / current discharge capacitor for a destructive test of the two difference fuses. You should also check out how ingenious high voltage fuses are made in this article Teardown of a medium voltage fuse (7200 V /
AC vs DC fuses, High Current, Explosive Destructive Testing and Theory Read More »
Teardown of the GE AMX-II SCR based inverter controller, driver and bridge for a General Electric mobile x-ray unit. It is a 120V battery operated apparatus from 1979, which has a 60 Hz mains inverter and 500 Hz high voltage inverter. All analog controlled with completely custom made electronics. For more teardowns of x-ray equipment,
GE AMX-II, mobile 110kV X-RAY system teardown Read More »
This is the third experiment with the bank of 35 electrolytic capacitors connected in series. Results are better than the theoretical estimate, which was 6000 A limited by ESR. So getting just over 7000 A is good, but the result is still a little tame when it comes to action. These tests had the bank
5kJ Capacitor Bank Fired at 12kVDC / 3.5kJ Charge Read More »
Second charge experiment with the bank of 35 electrolytic capacitors connected in series. The bank did however not get charged to more than 50% of its maximum holding charge, due to too weak power supply. More results will follow when a new power supply have been made and tested. All discussion about this bank can
5kJ Capacitor Bank Fired at 2kJ Charge Read More »