The x-ray circuit

220 V

Autotransformer

Cathode filament

Changes AC to DC

Changes V to kV and needs AC; mutual induction

Circuit breaker

Controled by time settings or AEC

Converts volts to kilovolt

Creates free electrons by thermionic emission

Exposure timer

Filament circuit

High voltage

KVp meter

Low voltage

Main power supply

Mutual induction, requires alternating current, more mA to filament means more heat to make more electrons for thermionic emission.

Needs DC and High voltage

Primary circuit

Protects circuit from power surges or short circuts

Rectifier diode

Rheostat/mA selector

Secondary circuit

Self induction, kVp selector, needs AC

Sets mA to be sent to filament to control thermionic emission

Step down transformer

Step up transformer

X-ray tube