Hello! I have a question how to calculate the required resistor for LEDs. There is a scheme in which + all the LEDs are connected to fds4953 and - each LED to registers hc595. I wanted to increase the brightness of the LEDs by changing the resistor which is at fds4953. How can I calculate which one is right for me?
Your post makes NO sense without a schematic.
Post a good, clear schematic of your circuit if anyone is to help you.
Also, post data on your LED, and what duty cycle you are running it at.
// Per.
Zapro:
Your post makes NO sense without a schematic.Post a good, clear schematic of your circuit if anyone is to help you.
Also, post data on your LED, and what duty cycle you are running it at.
// Per.
If shortly then I have a cube 8 * 8 * 8 layers are connected to plus and minus to registers. LED 3.3V in 20mA. cube 5v food. It burns very weakly. So I want to replace the resistors in order to be brighter. I do not understand how to count. Actually, the LEDs are not connected in series. so I do not understand how to count.
@muse9009
Pick one of the below:
-
Change R4
-
Your verbal description is not enough for others to understand your circuit. You say you want to change a resistor, however you've not even told us that there are resistors in you circuit.
If you cannot or will not provide enough information the folks here will simply look to help another who has put the effort into their question.
JohnRob:
@muse9009Pick one of the below:
Change R4
Your verbal description is not enough for others to understand your circuit. You say you want to change a resistor, however you've not even told us that there are resistors in you circuit.
If you cannot or will not provide enough information the folks here will simply look to help another who has put the effort into their question.
I wrote in the beginning that next to the transistor are resistors! What may not be clear is what I said. There is a cube of 8 * 8 * 8. You need to calculate the resistor for one layer. The layers are plus.
muse009:
I wrote in the beginning that next to the transistor are resistors! What may not be clear is what I said. There is a cube of 8 * 8 * 8. You need to calculate the resistor for one layer. The layers are plus.
You need to post a schematic, with all the parts identified. Your verbal description with stuff like "I have a cube 8 * 8 * 8 layers are connected to plus and minus to registers. LED 3.3V in 20mA. cube 5v food." and " I do not understand how to count...I do not understand how to count." makes no sense to anyone who doesn't already know what you are talking about.
However, just trying using a resistor with less resistance. If the LEDs burn out, replace them, and don't use that low of a resistor.