CCS C Software and Maintenance Offers
FAQFAQ   FAQForum Help   FAQOfficial CCS Support   SearchSearch  RegisterRegister 

ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

CCS does not monitor this forum on a regular basis.

Please do not post bug reports on this forum. Send them to CCS Technical Support
How to convert 3.6v to Transducer excitation 21 volts

 
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion
View previous topic :: View next topic  
Author Message
suncq



Joined: 21 Jul 2006
Posts: 21

View user's profile Send private message

How to convert 3.6v to Transducer excitation 21 volts
PostPosted: Thu Nov 01, 2007 7:31 pm     Reply with quote
I have a project about battery powered telemetry unit now. Battery is 3.6 voltage. I need to convert this voltage to Transducer excitation 21 volts (@ 200mA).Because It will be into ADC channel. the ripple voltage need be as little as possible.
any tip? thanks in advance!
[email protected]
asmallri



Joined: 12 Aug 2004
Posts: 1635
Location: Perth, Australia

View user's profile Send private message Send e-mail Visit poster's website

Re: How to convert 3.6v to Transducer excitation 21 volts
PostPosted: Thu Nov 01, 2007 8:48 pm     Reply with quote
suncq wrote:
I have a project about battery powered telemetry unit now. Battery is 3.6 voltage. I need to convert this voltage to Transducer excitation 21 volts (@ 200mA).Because It will be into ADC channel. the ripple voltage need be as little as possible.
any tip? thanks in advance!
[email protected]


Assuming you find a 100% efficient converter (no such thing exists) the 3.6 volt rail would need to deliver 21/3.6 * 0.2 A to the converter. Assuming 70% efficiency (low because the source voltage is so low) then you need to deliver 21/3.6 * 0.2A / 0.7 = 1.6A

If your 3.6 volt rail is not capable of doing this then it is back to the drawing board.
_________________
Regards, Andrew

http://www.brushelectronics.com/software
Home of Ethernet, SD card and Encrypted Serial Bootloaders for PICs!!
suncq



Joined: 21 Jul 2006
Posts: 21

View user's profile Send private message

PostPosted: Thu Nov 01, 2007 9:10 pm     Reply with quote
thanks for reply!
I need to provide the Transducer excitation just 2 seconds at 21 volts. I use a 3.6v(14.5AH) battery.
you can see somebody have done this. but I don't know how they do?

http://www.in4ma.co.uk/downloads/in4mametron.pdf
Display posts from previous:   
Post new topic   Reply to topic    CCS Forum Index -> General CCS C Discussion All times are GMT - 6 Hours
Page 1 of 1

 
Jump to:  
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 vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group