Mobile x-ray unit 100 kV DC

Mobile x-ray 100 kV spark limited by a resistorI have acquired a mobile x-ray unit 100 kV DC base with its associated transformer, diodes and capacitor under oil.
“Continue reading” for more details and photos.

Mobile x-ray unit

Mobile x-ray faceplateThe mobile unit partially disassembled. I have already used the meter to make my high voltage meter described later. One of the ballast transformers went on to be used as the electromagnet in my magnetic levitation unit.

Mobile x-ray transformer internalMobile x-ray twin diode as bridge doubler circuit

Mobile x-ray 100 kV DC Capacitor

A peek at the internals lifted out of oil. The transformer which by my calculations will be at least 17 kV AC in a single winding drives a bridge doubler arrangement with 2 diodes. The 2 diodes are the single black bar in the middle photo about 1 foot (30 cm) long. The right photo shows one terminal of the capacitor which is about a cubic foot and occupies most of the space. 

Mobile x-ray unit 100 kV DC. Resistance is useless!High voltage resistor 160 kohm internals

The burnout on the left above lost only 4 of the 67 resistors. It was resurrected and extended to 100 resistors for total 160 kohm and immersed in oil in the container above. Despite the 6 inch gap between electrodes it still arcs across at times with this 100 kV supply. 

Mobile x-ray unit 100 kV DC jumping between terminalsA 5 inch (12cm) arc between terminals is on the left instead of going through the resistor as intended. 

Related pages

X-ray 60kV DC with spark drawn out to 26 inches  X-ray transformer 60 kV

Try something else

BluRay violet laser  Blu-ray laser

External links

Bridge doubler – Wikipedia

Photo Date:  2004

Leave a Reply

Your email address will not be published. Required fields are marked *