Sunday, November 29, 2015

Demon Core v2 - lpf filter and step down board - update 4/01/2016

I buy circuit board with 2 step downs systems and LP filter for Video channel.

* manufacturer foto

Two channels was tested:
-5V
-12V

I want to used this at 4S setup (max 16,8V ) so thats i set up at power supply in lab.
At oscilloscope we can see 2 source of signals and parameters like: peak to peak, max/min voltage etc.

and closely only parameters:

The next test was temperature with thermovision 

Few seconds of working :


20 seconds after 

 And after 2 min of working

It's not necessary to use external radiators on step downs chips but i used and i works very well (see at pic. up). The board working excellent and witch all surface heat going out. This was tested in lab without cooling and air flow - in air will be better. 


Features:
- 5V channel for FC
- changeable channels 5/12V for Camera
- changeable channels 5/12V for TX video FPV
- channel for On Screen Data (OSD) 
- Low Pass Filter (LPF) 


Update 4/01/2016 

Manufacurer send me a improved version - in sell now. There are improved noise at 12V channel and better heating dispersal. 

Here you have result 5min working in non cooling conditions - still works fine:
  

Electrical Parameters:


When you are buying now there are come in nice cardboard 



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