Multiply R×C, then look up f:
: Once it hits the lower floor, the output flips High again, and the cycle repeats forever. This constant "indecision" between two thresholds creates a perfect, repeating pulse—a heartbeat for your circuit. Component Calculation Guide To find your frequency, you can use the Stompbox Electronics Calculator or follow these steps manually: 1. Determine Target Frequency 74hc14 oscillator calculator
r = 18e3 # 18k ohm c = 100e-9 # 100 nF
$f = \frac10.55 \times 430 \times 10^3 \times 10 \times 10^-9 = \frac10.55 \times 4.3 \times 10^-3$ $f = \frac10.002365 \approx 423 \text Hz$ Multiply R×C, then look up f: : Once
Compute t_charge = RC·ln(A/B) = (10k·100nF)·ln(3.1/1.9) = 0.001 · ln(1.632) = 0.001 · 0.490 = 0.00049 s t_discharge = RC·ln(V_T+/V_T−) = 0.001 · ln(3.1/1.9) = same = 0.00049 s Period ≈ 0.00098 s → f ≈ 1,020 Hz. Duty cycle ≈ 50%. Determine Target Frequency r = 18e3 # 18k
The 74HC14 is a High-speed CMOS device, but it is not an RF transmitter.