Re:555 timer teardown: inside the most popular IC (2016)
by willis936 on Friday June 05, 2020 @07:24AM
(#23427292)
You don’t need a 7805 in a switching power supply. You do need a 555. Switching power supplies are in everything.
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Re:555 timer teardown: inside the most popular IC (2016)
by panpanna on Friday June 05, 2020 @07:39AM
(#23427373)
You 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.