Rohith_elec
Full Member level 4
is it good to make a 3.3V psu from 7805 using diodes to powerup a 3.3V uC ?
it is difficult to get 1117 voltage regulator here,
it is difficult to get 1117 voltage regulator here,
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There are many types of regulators with 3.3V output, maybe you can find another type that's available in your area? There's also a 3.3V output version in 78xx series (LM7833).
Another option is to use an LM317 with output voltage set to 3.3V.
the best way is to use LM317............. it is the brother of LM7805 but it is adjustable. the main benefit is it is cheap and easily available.
so the best option in my point of view is LM317...... 3 pin adjustable regulator
True.The discussion of this thread is "3.3V psu from 7805 power supply", there is no way to get 3v3 from 5v input with LM317 (..)
is it good to make a 3.3V psu from 7805 using diodes to powerup a 3.3V uC ?
it is difficult to get 1117 voltage regulator here,