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.

need help to measure ac voltage and current

Status
Not open for further replies.

eng_mahmoud87

Newbie level 6
Joined
Jun 8, 2007
Messages
14
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,371
i need to measure ac current and voltage by microcontroller PIC16f877 (A/D) but this A/D can measure until 5v so i need circuit to make scale between 5 v and 24 v and thanks alot
 

hassenman

Advanced Member level 4
Joined
Nov 29, 2004
Messages
117
Helped
4
Reputation
8
Reaction score
1
Trophy points
1,298
Activity points
912
Hi eng_mahmoud87,

This is very simple, u can use a simple resistors divider to measure the voltage .
Concerning the current, u will have to measure it by measuring the voltage across a resistor and manage to do the math with your soft.

Hope this helps,
regards,
Hassen.
 

max0412

Full Member level 5
Joined
Oct 26, 2003
Messages
253
Helped
34
Reputation
66
Reaction score
5
Trophy points
1,298
Activity points
1,999
Good app note from Zetex might give you some ideas.

Code:
http://www.zetex.com/3.0/appnotes/apps/an39.pdf
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top