Labels:text | diagram | technical drawing | plan | schematic OCR: Basic Astable Circuit Brought to you by: TOM CAT DOMAIN BBS Voc (+5 to 15v) 208-375-6571 <t1> R1 8 ¢2 7 Output t1 = . 693(R1+R2)C1 R2 2 555 12 = . 693(R2)C1 Frequency = 1.44 6 (R1+(2XR2))C1 2 1 C2 Here pins 2 and 6 are connected so the circuit will trigger itself each timing cycle, thereby functioning as an oscillator. C1 charges through R1 and R2 but discharges through R2. The charge on C1 ranges from 1/3 Vcc to 2/3 Vcc. The oscillation frequency is indepedent of Vcc.
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