Listen2this1
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Quote:
Joneeboi, I learned this calculation the hard way. If you are using a 2.2ohm resistor for RB10/11 you will use the multiplier of 2.2 for your calculations. ie: if you are reading 200mV on a Dmm you would divide this by 2.2 and get 90.9mA. You will be making these readings from TA2-L/R to TB-L/R, Not to ground.
Hope this helps
Originally Posted by joneeboi /img/forum/go_quote.gif I'm all for biasing up to 150mA, but I just don't have any clue how many mVs I need to hit that mark. I'm running ~24.5Vs so I can easily hit that 150mA mark, I just don't know how carefully I should tread. There's got to be something I can consult wrt to this matter. The MAX website says 264mV for MOSFETs will give me 120mA. Does this transfer over for BJTs? I checked the MAX site, Steinchen's dB site and the M^3 site but I couldn't find anything. |
Joneeboi, I learned this calculation the hard way. If you are using a 2.2ohm resistor for RB10/11 you will use the multiplier of 2.2 for your calculations. ie: if you are reading 200mV on a Dmm you would divide this by 2.2 and get 90.9mA. You will be making these readings from TA2-L/R to TB-L/R, Not to ground.
Hope this helps