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

Spice of a push pull Howland VCCS lower output thanthat of a single howland VCCS?

Status
Not open for further replies.
M

middlehein

Newbie level 5
Joined
Aug 5, 2012
Messages
10
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,398
Now that I had that great help with figuring out how to use spice I am now hard at it. I am trying to drive at least 2uA of current through a 1Mohm resistor with some capacitance at frequencys of 100hz to 50khz. From what I have read a howland circuit is a possibility though from some testing I have done it appears I need something a little more. One thing I want to test is a push-pull howland current set up. The curious thing though is that in my spice model the single howland current source actually puts out a little more current than does my push pull set up. So I am just wandering if anyone happens to have any insight. I have attached a .ppt with the circuits and the output for your reference.

thanksView attachment VCCCS PSPICE test.ppt
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top