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As the title says, I have put together 2 555 circuits (dimming and blinking) into an NE556. I added a switch to toggle between blinking and dimming and used it to drive an LED. However, I noticed during dimming the LED flickers, how to fix this?

I am trying to make a lamp which is able to switch between blinking and dimming modes, with the blinking mode having a fixed brightness. That is how I came up with the idea of putting 2 separate circuits together into a 556 to drive one output but came across this issue.

Thanks in advance

PWM circuit

Blinking Circuit

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  • \$\begingroup\$ Show your combined circuit. \$\endgroup\$ – Wouter van Ooijen May 16 at 6:40

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