Hi,
Sorry, too many posts have gone by, so Iāll answer the ones I know about here so we can kind of start fresh:
- [wight, I think]: That was a good call on the solder blob, i.e., you were right, that all 3 components (one end of the toroid, one end of the 151 component, and one end of the brown component) are shorted together, both the blob-less and the blob-ful board.
- [wight, again, I think]: I didnāt find an R200, but I did find an R300, so I figured Iād try that, parallel. From the post above, R300 would be .3 ohms?
So, I have R200 and R300 in parallel, i.e, so equivalent of 0.12 ohms.
Is that correct?
Anyway, I tested the driver after that, and BINGO, Iemitter on high went to ~1.62 amps (from previous 0.90 amps)!
So:
0.2 ohms => 0.9 amps
0.12 ohms => 1.62 amps
I took the Vbat/Vin quite high, > 10V, I think, but I got excited, and didnāt really watch the correlation of the Ibat/Iin vs. the Iemitter, but I did see Ibat/Iin start dropping at some point as I raised Vbat/Vin.
Iāll do that later.
So, given the above, what resistor value do you all recommend to replace the R200 āsafelyā?
Thanks,
Jim
EDIT: Can we get this driver to 3 amps at the emitter, or maybe even higher?
EDIT 2: And yes, I still do have all 5 modesā¦