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I am using ams1117 to convert 5v/1A DC to 3.3v/1A using - https://iotbytes.wordpress.com/3-3v-power-supply-for-esp-8266/.

Can this 1 amp output (measured via ammeter) damage the esp8266 or i need to limit the input current (via resistor)?.

puneet336
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    This is a duplicate, but I am too lazy to find one to refer to. Did you google? – Wouter van Ooijen Aug 19 '18 at 10:00
  • @WoutervanOoijen yes, I did google it, and emphasis on correct voltage is there on many forums, but there was not much discussion on current requirements. At - https://www.esp8266.com/viewtopic.php?f=13&t=12996 . . The candy analogy was also helpful, but i wanted to be sure (i am beginner in electronics). "- candies store can afford delivering tons of candies, but the child just wish to get 12 candies, so it is ok !" – puneet336 Aug 19 '18 at 10:49

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This question has been asked many times before, in each case the person asking doesn't understand that what matters is the voltage. The load determines the current so there will be no 1 A flowing.

Not exactly a duplicate but it explains the principle behind voltage and current in relation to power supplies: Choosing power supply, how to get the voltage and current ratings?

To sum that up: you need to make sure that the ESP8266 gets the right voltage and then it will draw the current it needs. That current (needed by the load, the ESP8266) needs to be lower than what the supply can deliver. With the module your supply can deliver 1 A which is more than enough for an ESP8266.

Bimpelrekkie
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