Need design of ac voltage measurement circuit and c code

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senthilkumar

Joined: 24 Nov 2001
Posts: 668
Helped: 4
Location: india

15 May 2009 11:46 voltage measurement circuit

Need design of ac voltage measurement circuit and c code for 89c2051?

any link ?
any help

blueroomelectronics

Joined: 17 Sep 2006
Posts: 1681
Helped: 99
Location: Toronto, Canada

15 May 2009 13:20 ac voltage measurement circuit

Just buy a multimeter.

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senthilkumar

Joined: 24 Nov 2001
Posts: 668
Helped: 4
Location: india

18 May 2009 4:59 site:www.edaboard.com ac voltage measurement

i need the circuit using 89c2951 not a multimeter mr.blueroomelectronics

engr_najam

Joined: 10 Aug 2006
Posts: 135
Helped: 5

18 May 2009 14:11 digital voltage measurement circuit

i think if u interface an ADC with ur controller, and properly adjusting the +ve Vref and -ve Vref voltages. when the data is converted to digital, the zero of digital will be -ve Vref and the maximum of digital will be +ve Vref voltage, all the others voltages will lie in between.
u can then measure the voltage by proper scaling the digital measurement.
hope this will help a bit.