|Apr 27, 2011, 09:23 PM|
On board glow driver voltage regulator
I've been flying electrics for some time now and now have 2 glow planes as well.
I picked up a 63" Super Chipmunk and I'm just waiting for some nice weather to maiden it. http://www.generalhobby.com/super-ch...ane-p-104.html
I mounted an Evolution .60 inverted and even with the cowl off it's not straight forward putting on the glow driver. So I made my own on board glow driver. It has a remote plug for a regular glow driver, a toggle switch for the on board and I can also activate with my Tx. A green LED lets me know the on board switch or the Tx is activating it. A red LED will light if the glow plug is burnt out or if the glow plug is not getting current.
I first tried a single 2000 mah Eneloop nicad and then 2 Eneloop's in series and finally 4 cells, 2 in series and those in parallel.
I want to use a single lipo cell. The problem is the voltage is too high...I had to try it.
I just would like some of the more versed do it your selfers if they could take a look at this voltage regulator and tell me if it's suitable for stepping 4.2v down to a usable voltage for the glow plug.
Here is the regulator: http://cgi.ebay.com/DC-DC-POWER-CONV...item3cb689b09f
Here is the info:
DC/DC POWER CONVERTER VOLTAGE ADJUSTABLE 1.2V TO 18V
DC to DC Converter Module
Compact DC-DC Step-Down Converter Module. The output voltage is adjustable via the blue trimmer. Ideal for any electronics project.
Input Voltage: 3-30VDC
Output voltage: 1.21-18VDC
Max output current: 3A (Recommend use following in 2A, leaving a certain margin)
Built in LM2596S-adj
Dimensions: 37mm x 37mm
*Step-down: The input voltage must be at least 1.5v higher than the output voltage.
1x DC-DC Converter Module
To me it looks like it'll work and then I can use a single 5000 mah lipo cell and this should give me plenty of starts.
Does it it look like it'll work?
|Apr 27, 2011, 10:15 PM|
Most Glow plugs draw more than 3 Amp, Enerloop are Nimh (not Ni-cad) and not good for high drain as you found out. Jomar has a nice unit for that very purpose that I would trust more than some ebay shadowy dealer:
What you need to use for power is a D-size (AA size just can't provide the current) or even F-size Nicad so you won't have to deal with the voltage regulator.
|Apr 27, 2011, 10:44 PM|
Thanks for the info. I know I wrote nicad however I know they are Nimh batts.
I'll have to check and see what the amp draw is and I think you might be right about 3A max draw not being enough.
I'll stick with what I have and give it a real world test when I take her up.
I'll order the regulator for 9 bucks and give it a shot. I'll find a use for it somewhere.
|Apr 28, 2011, 04:25 AM|
why use switching devices where a single "C" ( 23*43) element perfectly fits ???
just add a a plus or minus intelligent switch to drive it i.e.: http://aeronews.free.fr/archivesarti...ropratique.zip
|Apr 28, 2011, 10:09 AM|
I clicked on this file in the zip that DL's: electropratique.htm and it came up, It has to be translated.
|Apr 28, 2011, 02:41 PM|
|Apr 28, 2011, 02:43 PM|
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