Building a Battery Simulator - Part 2

RE: Building a Battery Simulator - Part 2

Robert Peter Oakes — Wed, 24 Dec 2014 16:28:58 GMT

This is a very illuminating project I am following with great interest, as you know I am in the middle of my power system project and part of that is a DC load and power meter, my end game to have it fully micro controlled, I had not thought of adding a battery simulator but this could make a great addition, in my case with luck a software emulation (Assuming I can react quick enough and keep the output stable) but at the end of the day, even an analogue version like this would be cool

btw, have you thought of using digital potentiometers as the means to allow computer control rather than DACs, this way the circuit would effectively still be pure analogue but the computer turning the pot [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-723343e7-e91c-4a8b-967b-efca73105133/1033.contentimage_5F00_1.png:16:16]

RE: Building a Battery Simulator - Part 2

michaelkellett — Mon, 22 Dec 2014 15:08:27 GMT

Are you attempting to model the battery impedance as well as discharge ?

(I couldn't work out if the series resistor is a fixed part or a dynamically simulated part from your first blog).

Will you post a schematic (or have I missed it) ?

RE: Building a Battery Simulator - Part 2

DAB — Sun, 21 Dec 2014 22:35:29 GMT

It will be interesting to see how well your board keeps the signals clean.

I always worry about coupled AC getting into the measurement circuits.

As I said before, I am very interested in see how well your design works out. You have given me some ideas.

Thanks,

DAB

RE: Building a Battery Simulator - Part 2

shabaz — Sun, 21 Dec 2014 21:28:56 GMT

Here's an interesting use for a battery simulator that I had not considered, and he's using it to great effect (no pun intended) : ) (Great website too).

http://www.beavisaudio.com/projects/DBS/

I like the name he's given it too - DBS (Dying Battery Simulator).

Since my project doesn't have a name yet, I'm thinking (for obvious reasons) Project Morpheus [View:/resized-image/__size/16x16/__key/commentfiles/f7d226abd59f475c9d224a79e3f0ec07-723343e7-e91c-4a8b-967b-efca73105133/contentimage_5F00_1.png:16:16]

RE: Building a Battery Simulator - Part 2

jw0752 — Sun, 21 Dec 2014 05:33:44 GMT

Hi Shabaz, You have time to do all this beautiful work and still have time left over to help a friend get his little oscillator going. I will continue to follow your project as it is very interesting. Thanks for everything.

John

RE: Building a Battery Simulator - Part 2

mcb1 — Sun, 21 Dec 2014 05:12:24 GMT

Sounds like a very useful item.

The electronic tag is a great idea, and as you point out can be used for calibration reference checks.

Thanks

Mark