NF HVA4321, Instruction Manual

Page: 57 / 152

4.1 Operation example in constant voltage mode
HVA4321
4-1
4.1 Operation example in constant voltage mode
This section describes operation example for use of this unit in constant voltage mode.
In constant voltage mode, the output voltage changes according to the input signal.
Figure4-1. Constant voltage mode (total mode)
lamp :Output current of high voltage amplifier
lint :Leak current with internal capacity
lout :Output current
lstr :Leak current with wire capacity
lload :Load current
lac, ldc :DC and AC of detected current
In total mode, from output current lout, DC is detected with current detection resistance and AC is
detected with current transformer CT. Total output of leak current lstr with wire capacity and load current
lload is given to the current monitor.
(Leak current lint (AC) with stray capacity in the amplifier runs through the current detection resistance,
but only DC is detected here. The monitor is hardly affected.)
Effect of stray capacitance of the cable is found only for AC signal output. Effect of stray signal is not
found for DC signal. Therefore, use the DC signal in total mode.
！
CAUTION
内 部 容 量
出 力 端 子
配 線 の 容 量
負 荷 抵 抗
電 流 検 出 抵 抗
電 流 検 出 抵 抗
（ ト ー タ ル 用 ）
（ ロ ー ド 用 ）
電 流 モ ニ タ
OUTPUT Hi
OUTPUT Lo
TOTAL
LOAD
I out
Ii nt Istr
Il oad
I amp
I ac
I dc
CT
電 圧 モ ニ タ
Output terminal
Load
resistance
Wire capacity
Internal capacity
Current detection
resistance
(for total)
Current monitor
Voltage
monitor
Current detection resistance
(for load)