reference design of voltmeter

[sapna.dudani@gmail.com]

hii
can anyone plz help me to search a reference design to design the schematic of a voltmeter......

 

[Reloadron]

Pretty open question. What type of voltmeter? What range of voltage? You have not provided much information in your request.

Ron

 

[JimB]

Well, lets see what Google can do...

Not difficult is it?

JimB

 

[sapna.dudani@gmail.com]

The range of my voltmeter is 33 kv with 100 v resolution, its an ac voltmeter and i m using a microcontroller with inbuilt ADC. and a seven segment display
regards...

 

[Reloadron]

The range of my voltmeter is 33 kv with 100 v resolution, its an ac voltmeter and i m using a microcontroller with inbuilt ADC. and a seven segment display
regards...

If I wanted to do this I would start with a HV probe like the Fluke 80K-40. I would use strings of resistors designed for HV applications. I would read this document in detail. Once I had a divider I would find or design a signal conditioning network to get the AC to DC and scaled for a PIC or whatever. I am not suggesting you do this, merely how I might approach doing it.

You don't say much about this 33 KV and if you need to ask on something like this maybe messing with high voltage is not a good idea.

Ron

 

[sapna.dudani@gmail.com]

hey..

i knw thats a very high voltage range.. but for that problem i've come across that i can use a PT to reduce the voltage to approx 110 VAC which i can further pass through a series of resistors and a voltage divider ... will it be a right approach...
thanks to all of you for responding....