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24V LED Driver Dimmer controller and op amp (12V to 24V)

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24v led dimmer

Hi,
How to control a 24V LED Driver (Green) dimmer with precision (brightness range:most Brightness to turn off).

Can using MOSFET to design it?? Or using another component to design it?

Another problem is how to using op amp to step up 12V to 24V??

I try using 741 op amp can't do it, so another op amp can do it or not??

Thanks!!
 

opamp dimmer

u can try PWM with 555 timer? :)
 

led driver dimmer or dimming

An OpAmp is the wrong choice for trying to supply higher voltage for LED operation because it isn't intended to provide the current you will need.

There are special purpose IC's that do exactly what you want. One of my favorites is at the URL below. Search using Google, and you will find others by other manufacturers.

https://www.linear.com/pdf/1932f.pdf
 

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