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Don't go with your way of setting the pot. there are so many pots out there. 1 turn 2 turn half turn. see what i mean. here is a pic of how to make a super duper simple dummy load for setting your driver. and once you have it made, depending where you place the resistor, you will always have it. you can thank rog8811 for this one. hope it works out. oh, also this just hit me, don't widen the hole but you can bevel the edge. and yes if the glass breaks it still can be used if you safely get out the debris.
Use a 10ohm, all you have to do is multiply the mv reading by 10 to get the ma.
Regards rog8811
Sorry brain fade...it comes with old age....I will edit my post, I don't like to leave wrong info on threads.I hope you meant divide not multiply because I'm getting readings of 107mv at the least and 1.01v at the most on the pot.
1. Does my current needs to be adjusted while using a dummy load?
2. is the diode geting 2.8v or actually less ? as i have measured
no voltage drop. But then again im not measuring things correctly.
3. my blue diode driver was set up with the same 4.93v input and
may need to be adjusted also as its output was adjusted without a
dummyload.
1. remove the lm317 curcuit and feed the 4.93v to the constant
current driver
2. Disconnect diodes, adjust with dummyload 1mv=1mw {already built one}
3. make sure Capacitor is discharged before reconnecting diodes
Sorry brain fade...it comes with old age....I will edit my post, I don't like to leave wrong info on threads.
Regards rog8811
Computer power supply output 4.93v wired to a homemade Adj Lm317
voltage regulator tuned to an output to 2.83v as directly tested with digital multimeter for volts. The curcuit is similar to this:
This 2.83v is fed to my constant current driver:
I then tested the output of the constant current driver for voltage with multimeter ( 2.8v) Not much of a drop but no load just multi meter.
Next i adjusted the current pot to output of 180ma (no dummy load)
Questions:
1. Does my current needs to be adjusted while using a dummy load?