| Electronics > Beginners |
| Discreet startup delay? |
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| Zero999:
--- Quote from: MiDi on November 30, 2018, 06:32:16 am ---I am wondering how this magic circuit works without having the minimum cathode current on TL431. Could you enlighten me, please? --- End quote --- It doesn't. I put R4 in the wrong place. It should go between the gate and source. |
| MiDi:
There are special TL431 with much lower minimum cathode current, could worth a look at ;) |
| MiDi:
E.g. TI has an advanced tl431 with minimum cathode current of 35uA. |
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