Hello, I need an alternative power supply for my Arduino Uno. I dont want to use USB cable or DC adapter to supply power for Arduino. I have an current transformer that connected to electric pannel and provides AC voltage. I transformed AC voltage to DC but voltage changes according current passing through pannel cable. It changes about 0-12 V. So it is not suitable for Arduino.
Can I use an element that stores over voltage and discharge it when it is needed Or any other way to provide power for Arduino. How can I use that changing DC voltage effectively?
Thank you..
Consider using batteries, solar power, or both.
A current transformer works on the same basic principle as a plug-in AC to DC adapter, but is far less effective.
Look for a cheap DC-DC Buck converter and make sure it's rated to handle over 2x the current you need. I got 3A converters that will take 5V to 36V and change it by screw adjustment to 1.1V to 5V for around $2 ea.
They convert volts to amps as opposed to regulators that just dump excess power as heat, a 7805 which is what is on most Arduinos should regulate your 12V. You need to feed those 7V to get a regulated 5V out.
I cant use solar power because it will be used in closed area. I dont want to use batteries because it is not suitable for the project to change batteries each time they are discharged.
Since voltage changes between 0 and 12 volts, I need an element to voltage up when it is below 7 volts. Is it possible with DC-DC step up converter?
fatopato:
I have an current transformer that connected to electric pannel and provides AC voltage. I transformed AC voltage to DC but voltage changes according current passing through pannel cable. It changes about 0-12 V. So it is not suitable for Arduino.
No converter for 0 to 12V to 5V. Why can't you tap the AC with a proper power supply? The route you've chosen amounts to build your own special one for pulsing DC.
GoForSmoke:
No converter for 0 to 12V to 5V. Why can't you tap the AC with a proper power supply? The route you've chosen amounts to build your own special one for pulsing DC.
What do you mean by "proper power supply"? What if I add an stroring element like rechargable battery then use that changing DC to charge it? Is it possible?
Isn't there any way to use that AC to power Arduino?
What if you don't use the transformer and get a working power supply instead?