555 Timer Astable Mode
Free running oscillator, frequency and duty cycle formulas.
555 Astable Mode Quiz
Test your ability to calculate frequency and duty cycle in 555 timer astable configurations.
Question 1 of 3
Q1.In a standard 555 astable circuit with RA, RB, and C, the capacitor charges through RA + RB and discharges through RB only. The duty cycle D = T_high / T_total is:
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