What can take a 7.4v lipo down to 1.5v. So it can work for a glo igniter adapter. ?
Also I have 2 11.1v lipos, what will make them go down to 1.5v for the adapter.
Quote from: gotnitro on April 10, 2011, 11:17:12 PM
What can take a 7.4v lipo down to 1.5v. So it can work for a glo igniter adapter. ?
A 1.5 Volt voltage regulator can do that.
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=728-1029-1-ND
Quote from: Shawn68z on April 11, 2011, 12:09:29 AM
Quote from: gotnitro on April 10, 2011, 11:17:12 PM
What can take a 7.4v lipo down to 1.5v. So it can work for a glo igniter adapter. ?
A 1.5 Volt voltage regulator can do that.
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=728-1029-1-ND
Never mind. Doesnt support that much current. How much current does a glow plug use?
What about a potentionator? You can wire it as a riostat (sp) , that way you can control the output voltage. ?
You're going to be dumping way too much power.
You've got to go PWM, no two ways about it.
The answer is, not easily, unless you can find a solution someone else has come up with.
Na. Linear Voltage regulator such as this one would be a good way to do it.
http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=296-8158-5-ND
Upto 9V input, and allows the output to be controled from 1.2V to 8V. Deliveres 3Amps of current with only a .4 voltage drop. $9. So gerry, you can build a 2S glow plug ignition for about $15 in electronic parts.
Shawn
okay thank you.
What does a glow plug draw?
I'm guessing an amp for now.
So, 11.1 - 1.2 = 9.9 volts you're dropping, at an amp, which means 1 amp * 9.9 volts ~= 10 watts of wasted energy for every 1.2 watts of power out.
You're going to need a big heat sink.
I don't recommend this approach.
1. So that would be "why" glo sticks usually come with 1.2v batteries? To reduce the wasted heat released from a larger pack? (and to fit in your hand)
2. Was there a big heatsink involved on those starters that had the glo stick tied into the main battery?
Picked up to standard sub c at battery direct for 4dollars all good for both my igniters. Nimh battery
Quote from: Tom on April 12, 2011, 10:18:55 AM
What does a glow plug draw?
I'm guessing an amp for now.
So, 11.1 - 1.2 = 9.9 volts you're dropping, at an amp, which means 1 amp * 9.9 volts ~= 10 watts of wasted energy for every 1.2 watts of power out.
You're going to need a big heat sink.
I don't recommend this approach.
Its not a good approach, but if you mount it inside your starter box (assuming its metal), then I would use the 12V from the main battery, and use the chasis as the heat sink. It could work,but I am sure their is a better solution.