xray circut

line voltage input

Main incoming power supply (220 V AC).

Line monitor

Measures incoming line voltage to ensure proper

system operating voltage

line compensator

Adjusts line voltage tap to keep autotransformer

voltage precisely at 220 V.

autotransformer

Operates on self-induction; acts as the primary kVp

selector across single coil.

major kVp selector

Taps across autotransformer turns in 10-kVp step

increments.

minor kVp selector

Taps across autotransformer turns in 1-kVp fine

increments.

kVp meter

Voltmeter connected across autotransformer output;

indicates set kVp prior to exposure

timing, circuit and selector

Electronic timer that terminates exposure after set

duration.

mA selector

Bank of precision rheostats (variable resistors)

controlling filament heating current.

High voltage step up transformer

Mutual-induction transformer multiplying primary

voltage to high kilovoltage (kV).

rectifiers(diodes)

AC from transformer secondary into DC.

ground

Safety ground connected at secondary coil center tap

mA meter

Measures actual x-ray tube current in milliamperes

local spot selector/switch

Directs filament current to either small or large

tungsten filament coil.

filament step down transformer

Decreases voltage to ~10–12 V and increases current

to ~3–6 A to heat filament.

X-ray tube

Evacuated glass/metal envelope housing Cathode (-)

filament and Anode (+) target.