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It is common to have a series resistor to limit the current trough an LED. I saw a circuit using the LED driver: stp16cpc26. but instead having the series resistor, they are in parallel. This LED...
Question
LED-driver
#2: Post edited
![Image alt text](https://electrical.codidact.com/uploads/zz4M9zvS8HR7cWnWiuQq4wF5)LED with parallel resistor- It is common to have a series resistor to limit the current trough an LED.
- I saw a circuit using the LED driver: stp16cpc26. but instead having the series resistor, they are in parallel.
- This LED driver is a kind of constant current source, where you select the current selecting the Rext.
- Sorry but honestly I can understand why in parallel... I meant It seems having the series resistor might work as well
![Uploading, please wait...]()
- It is common to have a series resistor to limit the current trough an LED.
- I saw a circuit using the LED driver: stp16cpc26. but instead having the series resistor, they are in parallel.
- This LED driver is a kind of constant current source, where you select the current selecting the Rext.
- Sorry but honestly I can understand why in parallel... I meant It seems having the series resistor might work as well
- ----- Edit----
- Picture updated
- This is a LED driver, current output is set by the Rext.
- This is a SPI (kind of 16 bit shift register) and the brightness is controlled by the PWM duty cycle. I do not understand why the resistors are in parallel instead of series.
- This is a professional design
- ![Image alt text](https://electrical.codidact.com/uploads/rBLvCvWhK18XUp84e74EjCqT)
#1: Initial revision
LED with a parallel resistor
![Image alt text](https://electrical.codidact.com/uploads/zz4M9zvS8HR7cWnWiuQq4wF5)LED with parallel resistor It is common to have a series resistor to limit the current trough an LED. I saw a circuit using the LED driver: stp16cpc26. but instead having the series resistor, they are in parallel. This LED driver is a kind of constant current source, where you select the current selecting the Rext. Sorry but honestly I can understand why in parallel... I meant It seems having the series resistor might work as well ![Uploading, please wait...]()