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- Thread starter joncammarata
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Perhaps the LM138 series. From the data sheet it looks like it is rated for 5amp and can handle 7 to 12 amp surges.
Edit:
Do you have a pn on the caps?
I wonder if balancing resistors (1 per cap) would be needed,,, and if so then a disconnect from the battery to prevent battery drain and unexpected atty firing in the event of a malfunction. Some how I don't think that it would matter in this short burst application. But in any event a master off switch would be a good idea.
Here you go gummy , If you buy 10,000 at once they are only $1.47 apiece . $3.66 for 1 to 9 Digi-Key - 589-1002-ND (Manufacturer - ESHSR-0010C0-002R7)
Edit:Be sure to let us know gummy, if you break the laws of thermal dynamics
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In the K, P, and S package. the lm117 has a minimum regulated load of 1.5amps. I wired the LM117 voltage regulator into a load regulator. The Equation for this is:
I=Vref/R1 (R1= the sense resisters in the schematic) (Vref for the lm117= 1.25)
You will notice I use a .47ohm and two .05ohm sense resistors. The 3 position switch in the circuit allows me to add .05ohms or .1 ohms to the .47ohms to give me 3 load settings as follows.
.47ohms = 2.66Amps across the atomizer
.52ohms = 2.44Amps across the atomizer
.57ohms = 2.2 Amps across the atomizer
In reality the lm117 regulator is very sensitive and soldering and wire resistance and LED load etc. etc. lowers the actual output to about .2 amps lower than the math says it should be at. At least that's the average difference in the 4 mods Ive built so far. Also not that the resistors value I put in the schematic are not the actual size resistors I use in the mods.
I thought about using the 138 but the data sheet said it had a minimum load current of 3.5amps. I was looking for a range between 1.7- 3.5
I tested the balancing, The passive balancing seems pretty good o these. I think the reason is the do have a bit more internal resistance than a traditional resistor. As for an On / Off switch. I need more convincing. I thought it over but my goal was to have a battery that yu could just pick up and use.
Here you go gummy , If you buy 10,000 at once they are only $1.47 apiece . $3.66 for 1 to 9 Digi-Key - 589-1002-ND (Manufacturer - ESHSR-0010C0-002R7)
Edit:Be sure to let us know gummy, if you break the laws of thermal dynamics
I don't understand???? ( well I understand the laws of thermal dynamics, just not what you mean) But thanks for the link.
I was wondering if more info was gonna come out on this mod, just a noobie but interested
He may be holding off till he has them in production...there is a wolf among the sheep...and he's stealing tech(the wolf)...
I wish ya the best of luck John...I finished my studies on it...I'm saving the one mod I made as my personal for my trophy case and am going back to my alternate setup...the gains I was getting in power source compatibility were not panning out...I can get the same effect by another method and cheaper...
Hope ya get them out soon The people need a GOOD reliable PV with a longer runtime...you have a Good thing going there...keep up the good works bro...
I wish ya the best of luck John...I finished my studies on it...I'm saving the one mod I made as my personal for my trophy case and am going back to my alternate setup...the gains I was getting in power source compatibility were not panning out...I can get the same effect by another method and cheaper...
Hope ya get them out soon The people need a GOOD reliable PV with a longer runtime...you have a Good thing going there...keep up the good works bro...
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