It is currently Sat Feb 17, 2018 6:47 pm

All times are UTC - 8 hours




 Page 1 of 1 [ 1 post ] 
Author Message
 Post subject: Bed wetting alarm
PostPosted: Sat Jun 11, 2016 11:50 pm 

Joined: Thu May 24, 2007 3:28 am
Posts: 17
Hi,
Nice circuit aprart from the mains power supply. A unit like this that is by design in contact with a wet person should ideally not be powered from the mains, and if it is the power supply MUST be a low leakage medical grade type. The maximum leakage current for this type of application is 300uA. see www.excelsys.com/wp-content/up...
A power supply can have high leakage even without a fault. First (and possibly last) thing you know is when the alarm goes off and you reach for the (grounded) bedside lamp........
Best method is stick with battery power.
G8RPI


Offline
 Profile Send private message  
 
Display posts from previous:  Sort by  
 Page 1 of 1 [ 1 post ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to: