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ZMPT101B PDF даташит

Спецификация ZMPT101B изготовлена ​​​​«ETC» и имеет функцию, называемую «voltage transformer operating guide».

Детали детали

Номер произв ZMPT101B
Описание voltage transformer operating guide
Производители ETC
логотип ETC логотип 

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ZMPT101B Даташит, Описание, Даташиты
ZMPT101B(ZMPT107) voltage transformer
operating guide
1Wiring diagram
Figure
Figure
2Determination of maximum output rms voltage
Umax
Umax is decided by the AD peak voltage in the
sampling loop in principle.
Peakvoltag e
As for Bipolar ADUmax= 2
peak voltage
As for unipolar ADUmax= 2 2
for example:
As for ± 5V ADthe maximum rms voltage of
the transformer: Umax = 5V / 2 =3.53V
As for 0~3.3V ADthe maximum rms voltage of









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ZMPT101B Даташит, Описание, Даташиты
the transformer:V max = 3.3V / 2 2 =1.16V
3Determination of input current-limiting resistor
R′
Current-limiting resistor R′= V
I
VRated input voltage
I Rated operating current when Coil
resistance is compared with current-limiting
resistor R′ , it can be ignored.
ZMPT101B/ZMPT107 usually working at rated
current:1~2mA.
When
Rated
input
voltage≤100V Usually choosing the operating
current
I=2mA; When
Rated input
voltage≥220VTo reducing the resistor power
Usually choosing the operating current 1 mA
≤I≤2 mA.
for example: V=100VI=2 mA
R′= V =50K
I
for example: V=220VI=1.1mA
R′= V =200 k
I
To improve reliability, the current-limiting
resistor selected usually is greater than its
4times the rated power, and generally use a high









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ZMPT101B Даташит, Описание, Даташиты
temperature coefficient metal film resistor.
4Determination of the sampling resistor R
VR = V R= •outputmax outputmax
I Vinputmax
for example: Voutput max =3.53VVinput max =120VR=50 k
Directions:
R= 3.53 ×50 k =1.471 k
120
(1) Above formula is also suitable for the two
ways of active and passive output .
(2)when selecting the sampling resistorResistor
should not exceed :Voutput max R/Vinput max
5The advantages and disadvantages of the two
wiring
(1)Active output
Advantagehigh precise, small phase errorhigh
output voltagestrong load capacity
As for unipolar ADthe positive input terminal
of the op amp can plus a fixed
benchmark reference voltage to solve.
Meanwhilein order to simplify the line, Generally
do not access the c and r which are for the phase
compensation. If you need to compensateUsually










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Номер в каталогеОписаниеПроизводители
ZMPT101CURRENT TRANSFORMERZeMing
ZeMing
ZMPT101Bvoltage transformer operating guideETC
ETC

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

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