Easy Guide To Understanding the 44 Project and Resistor Value Calculator

fasteddy

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Guys, i have put together a 1 pager to help people understand the different uses of the 44 controller and the many ways it can be configured. It should go a long way to helping people understand the many different choices available with the 44 project

I have also added a resistor value calculator to help you work out the required resistor values needed to be used on the 44 boards based on the conditions you set.

If your not sure the 44 project is done by a member mrpackethead and all information and queries can be done through his web site at http://www.dec1.org/forums/index.php
 

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TimW

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Re: Easy Guide To Understanding the 44 Project

Thanks Eddy - you are the diagram king, once again!
 

fasteddy

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Re: Easy Guide To Understanding the 44 Project

Updated to V1.1 in first post, small error pointed out
 

Nath_From_NT

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Re: Easy Guide To Understanding the 44 Project

Eddy, you're a champion. Non-electronic folk like me need pictures just like that!
 

SmartAlecLights

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Thanks heaps for this eddy,
Now i understand what i learned the other day + learn the stuff i dont know by changing figures
now im not scared about getting the 44CC version now
Great Work
 

lithgowlights

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Eddy, sent you an updated version with the mods we spoke about last night.

For the rest of you, what it involves is:
Say the sheet tells you that you need a 2.15 ohm current setting resistor and you dont have one, and lets face it, other than MPH, most of us are not going to have that value!. Rather than panic, what it will allow you to do is enter the value you have which is closest and see what effect that has on forward, current and total current. It is up to you to then decide if you use that one - the sheet is not that smart, it just tells you the new calculated values :D

Also the same with the Voltage Matching resistor. The new update shows you the wattage required for this resistor, as well as allows you to select a value different to the "calculated" value in case you dont have one exactly as calculated. This then calculates the new voltage across the FET. This value should be as close to 2V as possible, but can be a little more, but this will increase the power dissipated in the FET within the chip. It also calculates the new power dissipation in the chip as well.

Both the resistors can be entered at once, so you can see the effect of altering both.

Once Eddy checks this, it should be online soon :)
 

mrpackethead

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lithgowlights said:
Say the sheet tells you that you need a 2.15 ohm current setting resistor and you dont have one, and lets face it, other than MPH, most of us are not going to have that value!.
I dont' have every value in 1%.. Thats for sure.. you'd need about 1000 values to make a useful set!

Bet David_AVD does though
 

fasteddy

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Re: Updated Project 44 Resistor Value Calculator to V1.3

Fasteddy said:
New version to the 44 Project calculator, it is now Version 1.3
V1.3 file fixed
 
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