Voltage/Current Transducer - Electronic Circuits Projects Diagrams Free

Tuck3rz · 4th November 2009, 06:41 AM

May I know how does a Voltage and Current Transducer works and why does is it neccessary to connect it to a dual supplies?

How do determine the R1 and Rm of the Transducer if I m were to use a
LA25-NP for Current Transducer
and
LV25-P for Voltage Transducer

Thanks and Sorry for the trouble.

Tuck3rz · 5th November 2009, 03:01 AM

Anyone is able to help me with my qns?
This is de data of the LV25-P

What does HT stands for too?

MikeMl · 5th November 2009, 03:16 AM

Read the data sheet

Tuck3rz · 5th November 2009, 03:30 AM

Thanks mike.. I have the datasheet too, just that i'm still unclear about it.

MikeMl · 5th November 2009, 03:55 AM

Do you know what "galvanic isolation" is?

Read the paragraph starting with the bold title; "Principle of Use"

Do you know how to convert a voltage into a current using a resistor? Hint, it has something to do with R1.

Tuck3rz · 5th November 2009, 05:12 AM

Sorry, I dun understand the meaning of it...

That means by adding a resistor R1, I m able to measure the voltage?
What about Rm?

MikeMl · 5th November 2009, 02:53 PM

I'm sorry to be blunt, but why are you using this component? It is designed to solve a specific problem, which is to make an "ungrounded", "floating", or "differential" measurement of current in an ungrounded circuit, while maintaining +- 1000V isolation from the input side to the output side.

The device is an active device, meaning it contains opamps, etc which require split supplies to make it work.

Tuck3rz · 6th November 2009, 05:24 AM

I m designing Two of the LV25-NP and LA25-P transducer to read the voltage and current produced by the generator and also to read the voltage and current inside a lead acid battery.
This transducer board will be connected to a Microcontroller board which consist of a ADC and a DS89C450 chip and it is connected to a laptop via a serial port which display the values on the hyperterminal on a laptop.
Hope you do understand as my english is not that good.

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4th November 2009, 06:41 AM	#1
Tuck3rz	Voltage/Current Transducer May I know how does a Voltage and Current Transducer works and why does is it neccessary to connect it to a dual supplies? How do determine the R1 and Rm of the Transducer if I m were to use a LA25-NP for Current Transducer and LV25-P for Voltage Transducer Thanks and Sorry for the trouble.

5th November 2009, 03:01 AM	#2
Tuck3rz	Anyone is able to help me with my qns? This is de data of the LV25-P What does HT stands for too? Last edited by Tuck3rz; 5th November 2009 at 03:01 AM.

5th November 2009, 03:16 AM	#3
MikeMl	Read the data sheet __________________ Mike ML.

5th November 2009, 03:30 AM	#4
Tuck3rz	Thanks mike.. I have the datasheet too, just that i'm still unclear about it.

5th November 2009, 03:55 AM	#5
MikeMl	Do you know what "galvanic isolation" is? Read the paragraph starting with the bold title; "Principle of Use" Do you know how to convert a voltage into a current using a resistor? Hint, it has something to do with R1. __________________ Mike ML. Last edited by MikeMl; 5th November 2009 at 03:57 AM.

5th November 2009, 05:12 AM	#6
Tuck3rz	Sorry, I dun understand the meaning of it... That means by adding a resistor R1, I m able to measure the voltage? What about Rm?

5th November 2009, 02:53 PM	#7
MikeMl	I'm sorry to be blunt, but why are you using this component? It is designed to solve a specific problem, which is to make an "ungrounded", "floating", or "differential" measurement of current in an ungrounded circuit, while maintaining +- 1000V isolation from the input side to the output side. The device is an active device, meaning it contains opamps, etc which require split supplies to make it work. __________________ Mike ML.

6th November 2009, 05:24 AM	#8
Tuck3rz	I m designing Two of the LV25-NP and LA25-P transducer to read the voltage and current produced by the generator and also to read the voltage and current inside a lead acid battery. This transducer board will be connected to a Microcontroller board which consist of a ADC and a DS89C450 chip and it is connected to a laptop via a serial port which display the values on the hyperterminal on a laptop. Hope you do understand as my english is not that good.