3 ms·
You don’t need a 7805 in a switching power supply. You do need a 555. Switching power supplies are in everything.
by willis936 6y ago
You don’t need a 7805 in a switching power supply. You do need a 555. Switching power supplies are in everything.
- panpanna 6y agoYou don't _need_ 555 for that. The last one I opened had two lm358 dual opamps but no 555. And nowadays we have dedicated ICs for that kind of things with much better safety and efficiency.