Hello,
I would like to use this 80W 6-28V 3A DC PWM motor speed controller using my power bank that output 4.9-5.1 V
The problem is that using a bench power supply I can see that the board only works at about 5.6V, is there a way to make it work at 5V ?
The board is based on a NE555 which according to its datasheet can work at 5V.
I'm guessing it doesn't work at 5.3V (I checked using the bench power supply) because maybe one of the resistors/diode drops the voltage a bit, but i'm a newbie so I don't really know.
Is there a way to fix that ? I don't need reverse voltage protection nor 3A, I only need 5V and let's say 2A.
Can I remove/replace a resistor/diode to get it working at 5V ?
I created the schematic of the board using a multimeter, but don't trust it 100%, I'm sure I forgot/made wrong connections.
If you need infos on particular components that are on the board feel free to ask.
Thank you !
Note : I've circled 2 components in red in the "capture.PGN" file because they don't look like that on my board (the "IMG_20200617_150759.jpg" is taken by me).
I would like to use this 80W 6-28V 3A DC PWM motor speed controller using my power bank that output 4.9-5.1 V
The problem is that using a bench power supply I can see that the board only works at about 5.6V, is there a way to make it work at 5V ?
The board is based on a NE555 which according to its datasheet can work at 5V.
I'm guessing it doesn't work at 5.3V (I checked using the bench power supply) because maybe one of the resistors/diode drops the voltage a bit, but i'm a newbie so I don't really know.
Is there a way to fix that ? I don't need reverse voltage protection nor 3A, I only need 5V and let's say 2A.
Can I remove/replace a resistor/diode to get it working at 5V ?
I created the schematic of the board using a multimeter, but don't trust it 100%, I'm sure I forgot/made wrong connections.
If you need infos on particular components that are on the board feel free to ask.
Thank you !
Note : I've circled 2 components in red in the "capture.PGN" file because they don't look like that on my board (the "IMG_20200617_150759.jpg" is taken by me).
Attachments
-
321.7 KB Views: 17
-
1.7 MB Views: 18
-
1 MB Views: 11