Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

measure AC voltage via ADC.

Status
Not open for further replies.

shahrol_hisham

Advanced Member level 4
Joined
Aug 1, 2002
Messages
111
Helped
2
Reputation
4
Reaction score
2
Trophy points
1,298
Location
malaysia
Activity points
869
site:www.edaboard.com ac voltage measurement

Can somebody help me in how to measure AC voltage using ADC. Ivould like to measure the AC voltage and send the result to uController.
 

Syukri

Full Member level 5
Joined
Aug 9, 2005
Messages
252
Helped
24
Reputation
48
Reaction score
10
Trophy points
1,298
Location
Malaysia
Activity points
3,954
measure ac voltage via adc

Ko cari la mane mane lab sheet
rase aku kalau ada input signal yg tak lebih drp 5V mmg bole convert kpd digital...

output drp ADC to bole trgger microcontroller ko

tp ko kena tau nak masuk kat port mane dan microcontroller prograaming ko pun kena ikut tu

anyway good luck
 

Kral

Advanced Member level 4
Joined
Mar 28, 2005
Messages
1,326
Helped
280
Reputation
558
Reaction score
85
Trophy points
1,328
Location
USA
Activity points
13,400
measure ac voltage adc

shahrol_hisham,
The most straighforward way is to convert the AC voltage to DC using one of the following:
A) Precision Rectifier followed by a Low Pass filter
B) RMS to DC converter
~
A) will result in a DC voltage that is proportional to the average value of the AC input. Google on "Precision Rectifier" for precision rectifier circuits.
~
B) will result in a DC voltage that is proportional to the RMS value of the AC Input. There are several IC RMS to DC converters available. Visit Analog Devices' web site.
Regards,
Kral
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top