|
|
|
|
|
#1
03-18-2013, 01:51 PM
|
|||||
|
|||||
Quote:
I did find some of the LM2576HV Chris was talking about on ebay for fairly cheap. But I kinda wanted to get what I have working, since, well you know, I have them  
|
|
#2
03-19-2013, 12:26 AM
|
||||
|
||||
|
Well... actually one less now
 The LM2576HV i have works well, stays cool, and is able to step down from 48VDC. Most of the other dc/dc converters are limited to ~36v, but the biggest selling point is that they come pre-assembled.  Here's that schematic for the fan. 
__________________
All spelling errors are considered intellectual property of its owner, and are not to be tampered with
|
|
#3
03-19-2013, 12:45 AM
|
|||||
|
|||||
|
Hmmm, pic is too small to make out. I tried saving it and zooming in but it went all blurry... unless that's the aftermath of the exploding transformer
|
|
#4
03-20-2013, 12:59 AM
|
||||
|
||||
|
lol.... sounds like Bill Clinton. Tranformer smoked, but I didn't inhale. Why is everything so blurry?
__________________
All spelling errors are considered intellectual property of its owner, and are not to be tampered with
|
|
#5
03-21-2013, 12:11 AM
|
|||||
|
|||||
|
Nope, didn't inhale. No really...
 Well I had a few minutes tonight so I finished soldering up one proto board and hooked up one of my waterproof temp sensors. After figuring out the address of it, modifying and re-laoding the sketch, all works well 
|
|
#7
03-25-2013, 03:21 AM
|
|||||
|
|||||
|
Well, I got a bit of time to fiddle around with my DC/DC step down transformers. And after staring at it for a while and tracing down pathway's I tried risking one and doing some trial and error. Turns out all I needed to do was remove the jumper that I'd originally installed and twin each of the solder points so instead of the 2 separate resistors, I had just the one variable resistor with 2 empty solder points. Everything seems to work and I can reduce the input 36V down to a variable 5.8V-12V
On to the next phase....
|
Hybrid Mode
