The Fast LED flashing circuit. that apply to AA Cell 1.5V. By add resistor 1K size between pin 1 and 8 pin of IC number LM3909. It will rate winking expansion 3 again times. When build capacitor 330uF sizes suit 1 pin and 2 adaptation pin modify by the tow electronic part outside. It make way for choose for resistor outside equal to 3K,6K and 9K. Other detail , see in the circuit.
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