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.

How to convert 3.6v to Transducer excitation 21 volts

Status
Not open for further replies.

suncq

Junior Member level 1
Joined
Aug 30, 2006
Messages
18
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,402
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!
suncq@126.com
 

blueroomelectronics

Advanced Member level 5
Joined
Sep 17, 2006
Messages
1,681
Helped
180
Reputation
358
Reaction score
77
Trophy points
1,328
Location
Toronto, Canada
Activity points
8,696
200ma at 21volts will require more than 1.4A from the 3.6V battery since any voltage multiplier will not be 100% efficient. Better have some pretty hefty batteries.
 

suncq

Junior Member level 1
Joined
Aug 30, 2006
Messages
18
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,402
thanks for reply!
But I need to provide the Transducer excitation just 2 senconds at 21 volts. I use a 3.5v(14.5AH) battery.

Added after 6 minutes:

you could see the url
**broken link removed**

But I don't kown how they do?
 

blueroomelectronics

Advanced Member level 5
Joined
Sep 17, 2006
Messages
1,681
Helped
180
Reputation
358
Reaction score
77
Trophy points
1,328
Location
Toronto, Canada
Activity points
8,696
National Semiconductor make boost ICs. Make sure it's rated for at least 2Amps
Usually it's an IC, powerfet, diode & Inductor.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top