/diy/ - Do It Yourself

Anonymous Sun Jul 30 02:30:00 2017 No.1218670 [View]
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>>1218648
Are those recommended currents or absolute maxima?

>>1218650
I neglected to clarify it's actually it's R5/each leg's emitter resistor.
The tempco of output current appears to be negative and a few uA/degC. You'll want to try to keep all the transistors at the same temperature, as Q2-Q4 temperature coefficients of current output are about -1%/degC! You might consider a transistor array in DIP package for this.

>>1218657
Linear regulators are pleb-tier.
May as well get a boost converter, connect all LEDs of a current in series, and set up for current control.

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/diy/ - Do It Yourself

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