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/diy/ - Do-It-Yourself


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>> No.2040299 [View]
File: 60 KB, 1004x644, like this.png [View same] [iqdb] [saucenao] [google] [report]

Like this here. Looks reasonable, right? I checked the power consumptions and they're all fine. Current goes from 5mA to around 30mA. Actual voltages and values subject to change, the highest voltage BJT naturally in LTSpice was only went up to 150V. Thankfully my control transistor will never see those voltages, I think. Now I just need to figure out the 5V/3.3V supply, capacitive dropper + zener might work, so long as it doesn't interfere with the existing bridge. Else power resistor + zener will have to do. I'll want to minimise quiescent current, probably using an ATTiny13. But the TL1838 takes up to 1.5mA.

Does this look like how this sort of current regulator chip would be designed?

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