I've converted a string of micro LED fairy lights powered by 2-CR2032 3V batteries to run off of a 5V 1.0A Switching AC/DC Power Adapter. The lights are "Steady On" when powered by the batteries, but flash off & on at quick, regular intervals when hooked up to the power supply. I want the lights to be "Steady On" when powered by the power adapter. What is causing them to flash off & on? And how can I fix it?
UPDATE:The experienced advice of several people helped me to solve the problem I was having with converting a string of battery-operated LED lights to a plug-in power source.
Here's what I think I learned:
Voltage matters: When I hooked up a 5V power adapter to a string of these LED lights, they either flashed off and on, probably a function of the built-in protection inside the power adapter.....or.....they snapped-crackled-and-popped and I managed to fry most of a string
Even though the voltage across the 2 batteries in series without a load was 5.96, the voltage across the 2 batteries with the LED lights running was only 3.0 to 3.3. The 5V power supply was too large.
When I hooked up a 3V power supply, the LED string functioned properly with the correct amount of light output/brightness.
I realized that I didn't have to worry about the current rating of the power supply, so long as it was enough. The current is pulled as needed by the LED lights up to as much as it needs.