An x-ray tube is a simple device; a cathode emits electrons that strike a tungsten anode that emits x-rays. Most x-ray tubes, though, are relatively large with low-power mammography tubes being a ...

The glass envelopes of the cathode-ray tubes were carefully cut from the sockets, and the guts of the tubes were discarded to make room for the replacement circuit, which lives on two PCBs.

There exists a misconception that cathodes are always negative, but, in fact, a cathode's polarity mainly depends on the device type, and can even vary ... Cathodes emit electrons in sputtering ...

Modern X-ray tubes have modifications depending on the functionality of the device. Applying a high voltage to the X-ray tube releases electrons from the filament cathode. These electrons then race ...