Variable Rate LED Blinker Circuit
Source: InternetPublisher:拳制龙 Keywords: LED Flasher Updated: 2024/09/03
The circuit of the variable rate LED flasher is shown in the figure below. By adjusting the 2.7kΩ potentiometer RP1, the flash frequency can be changed from zero to 20Hz. R1 and R2 are used to stabilize the duty cycle of the entire circuit, which can keep the LED brightness unchanged when the flash frequency changes.
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