- Wed Jan 02, 2019 4:19 am
#79817
Is it possible to power it up using a Full Bridge rectifier connected to the mains AC supply and step it down to the desirable 3.3-5V range?
- Wed Jan 02, 2019 3:24 pm
#79827
Yep, that's how some mains led lights work. There are modular Hilink 'all-in-one' components which are either 3.3v or 5v and do the rectification and the step-down, and are quite small (3cmx2cm).
megawatt6 wrote:Is it possible to power it up using a Full Bridge rectifier connected to the mains AC supply and step it down to the desirable 3.3-5V range?
Yep, that's how some mains led lights work. There are modular Hilink 'all-in-one' components which are either 3.3v or 5v and do the rectification and the step-down, and are quite small (3cmx2cm).
- Wed Jan 02, 2019 4:13 pm
#79829
Yes I have a couple of those running a Nodemcu each and a sensor. The sensor needs 5V and I am powering the Nodemcu with 5V via the Vin pin.
I was advised to add a surge resistor ( varistor ) before the PSU and I have a fuse.
There are modular Hilink 'all-in-one' components which are either 3.3v or 5v and do the rectification and the step-down, and are quite small (3cmx2cm).
Yes I have a couple of those running a Nodemcu each and a sensor. The sensor needs 5V and I am powering the Nodemcu with 5V via the Vin pin.
I was advised to add a surge resistor ( varistor ) before the PSU and I have a fuse.
