constant current pwm

[Atm0spher]

anyone tried zero's constant current pwm i have heard about?

[H2OPWR]

I bought one. It works but I do not care for it. It is a pain to keep opening the bos to adjust those small oots. It is also overpriced compared to what is available.

[Jaxom]

Ridelong drew up a nice simple little circuit to do this if you're electronically inclined enough to build it....see the "Maintain Current" thread.

[Bassman]

I have built 3 of Zero's PWM's. Two of them were built using a printed circuit board that you can buy on Ebay for $20. It is well worth it as it makes a real nice looking job and is simple to put together. The parts will vary in price but if you shop around, you can get the parts for under $50. Total cost is less then $70 and took me about 2 hours to build.

[Bassman]

Can you post a link??

I checked on Ebay and he doesn't have any listed right now. I don't know why, maybe because of the upcoming holiday. Here is his store if you want to watch for him or try and contact him.
http://myworld.ebay.com/ebaymotors/a...AQ:MOTORS:1181

Here is my last purchase if you want to see what it looks like.
http://cgi.ebay.com/ws/eBayISAPI.dll...m=300273953866

[cmac0351]

Is there alot of interest for these? I can get a batch made if people are looking for them.

I am actually the person who designed Zero's board for him. I used Eagle from Cadsoft to do the artwork. Zero prints out my artwork and uses it to etch his boards.

Here is a video of me using Zero's EFIE (a single o2 sensor version) with a board I etched. The EFIE works great, but I haven't finished a PWM to test yet.

http://www.youtube.com/watch?v=g7EhXyWLl8E


-Chris