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15_V_LED_FLASHER

2017-02-04 21:00  
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15_V_LED_FLASHER
National LM3909 IC operating from 1.5-V battery drives NSL5027 LED in such a way that current is drawn by LED only about 1% of time. External 300-μF capacitor sets flash rate at about 1 Hz.- Linear Applications,Vol.2, National Semiconductor,Santa Clara, CA, 1976, AN-154, p 2.