For very slow oscillations (e.g., a flashing LED every 5 seconds):
Multiply R×C, then look up f:
| R × C (seconds) | Frequency | |----------------|------------| | 0.000001 (1µs) | 454 kHz | | 0.00001 (10µs) | 45.4 kHz | | 0.0001 (100µs) | 4.54 kHz | | 0.001 (1ms) | 454 Hz | | 0.01 (10ms) | 45.4 Hz | | 0.1 (100ms) | 4.54 Hz | | 1 (1s) | 0.454 Hz | 74hc14 oscillator calculator
You need just one inverter from the chip, one resistor, and one capacitor. For very slow oscillations (e
If you want a 1 kHz signal: