Continue to Site

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.

Register Log in

Current Control with minimum power loss

Status
Not open for further replies.
D

Delta11

Junior Member level 3
Junior Member level 3
Joined
May 14, 2009
Messages
25
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,454
I am looking for a way to control current in a circuit with voltage supply of +28V. The current is supposed to have discrete levels with a maximum value of up to 2 Amps. The discrete levels maybe a jump of 0.5 Amps or 0.25 Amps.
 

If power losses are an issue, you may consider using switching voltage regulator configured as constant current source .. see attached picture (values set for 2A operation) ..
By introducing for example digital resistor around IC2b you can vary the output current ..


IanP
:|
 

Attachments

  • lm2576_-_2a_-_constantcurrent_-v1_1955.jpg
    lm2576_-_2a_-_constantcurrent_-v1_1955.jpg
    17.6 KB · Views: 166

    D

    Delta11

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top