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15_volt_LED_flasher_using_an_LM3909

2017-02-01 06:10  
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15_volt_LED_flasher_using_an_LM3909
1.5-volt LED flasher using an LM3909. Flashing rate is about 1 hertz. Circuitry inside dashed lines is the LM3909 (courtesy National Semiconductor Corporation).