110 Vac to binary 1 and 0

Status
Not open for further replies.
S

skorper

Newbie level 6
Joined
Apr 18, 2006
Messages
12
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,400
optocoupler application ac mains monitoring

I am looking to sense a 110 Vac input while outputting a binary 1 or 0 (+5v for sensing 110 Vac and 0v for when 110 Vac is turned off).
The binary needs to be the input to a PIC microcontroller.
 

you can use a transformer to step down to 5V
use a diode to rectify and a capacitor.

when the pic measures the capacitor voltage, when it detects 5V 100VaC is on line
 

Use a SPDT Relay
 

AC mains monitoring can be done with optocouplers .. see pictures below ..
Detailed description of these circuits can be found at:
**broken link removed**
(download the PDF version) ..

Regards,
IanP
 

    S

    skorper

    Points: 2
    Helpful Answer Positive Rating
Considering the extent of what I am trying to accomplish, transformers would be too bulky. Relays would probably introduce contact bounce.
The opto solution looks to be the best. I will research and calculate to try a viable solution.
Thank you one and all for your valued input.

Quote: "There are no WRONG answers. Only answers that apply to different questions"
by; Annonymous
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…