Hello to all forum members.
I am working an a small project of mine that involves an arduino board and a few relays.
My question has to do with the power supply section of my project.-
The arduino board needs 5V to run and the relays 12V.
I have a 12V 2A switching power supply. My intention is to use it to power the whole project. The relays can be hooked directly to it but power to the arduino board has to be stepped down to 5V and the current consumption is about 250ma more or less.
I tried the 7805 solution with input and output capacitors but it gets really hot. after 5minutes of running it reaches tempratures about 60-70C while ambient is 22C.
I am not even sure sure if that is normal...
So i Googled for a simple buck converter diagram to solve the heating problem and came across this site:
https://circuitdigest.com/electronic-circuits/12v-to-5v-buck-converter-circuit-diagram
I am asking about cmments and thoughts since i know nothing about switching PSU's
Thank you !!!
I am working an a small project of mine that involves an arduino board and a few relays.
My question has to do with the power supply section of my project.-
The arduino board needs 5V to run and the relays 12V.
I have a 12V 2A switching power supply. My intention is to use it to power the whole project. The relays can be hooked directly to it but power to the arduino board has to be stepped down to 5V and the current consumption is about 250ma more or less.
I tried the 7805 solution with input and output capacitors but it gets really hot. after 5minutes of running it reaches tempratures about 60-70C while ambient is 22C.
I am not even sure sure if that is normal...
So i Googled for a simple buck converter diagram to solve the heating problem and came across this site:
https://circuitdigest.com/electronic-circuits/12v-to-5v-buck-converter-circuit-diagram
I am asking about cmments and thoughts since i know nothing about switching PSU's
Thank you !!!