Dell 1815DN 15%, Output Voltage Fluctuation Method PWM Control, Line Regulation under

System Outline

Charge Voltage (MHV)

Input Voltage : 24 V DC 15%

Output Voltage : -1.2KV ~ -1.8KV DC 3%

Output Voltage Rising Time : 50 ms Max

Output Voltage Falling Time : 50 ms Max

Output Control Signal(MHV-PWM) : CPU is HV output when PWM is Low

Cleaning Voltage (THV-)

The (+) Transfer Voltage is not outputted because the THV PWM is controlled with high.

The (-) Transfer Voltage is outputted because the THV-Enable Signal is controlled with low The output fluctuation range is big because there is no Feedback control.

Developing Voltage (DEV)
Input Voltage : 24 V DC	15%
Output Voltage: -200V ~ -600V DC		3%
Output Voltage Fluctuation Method : PWM Control
Line Regulation : under	3% (fluctuation input 21.6V ~ 27.6V)
Load Regulation : Under	3%

Output Voltage Rising Time : 50 ms Max

Output Voltage Falling Time : 50 ms Max

Output Control Signal (BIAS-PWM) : the CPU output is HV output when PWM is low .

Supply

Output Voltage : -300V ~ -800V DC 5% (ZENER using, DEV )

Line Regulation : under	3% (fluctuation input 21.6V ~ 27.6V)
Load Regulation : Under	3%

Output Voltage Rising Time : 50 ms Max

Output Voltage Falling Time : 50 ms Max

Output Control Signal (BIAS-PWM) : the CPU is HV output when PWM is low .

Service Manual 4-13