Monostable 555 Timer Rechner
Berechnen Sie 555 timer monostable pulse width aus resistor und capacitor values.
kΩ
µF
Pulse Width
1.100 s
Pulse Width (ms)1,100.0 ms
Pulse Width vs Timing Resistor
Formel
## 555 Timer Monostable Mode ### Formula **T = 1.1 x R x C** A trigger pulse starts timing. The output goes high for time T then returns low. The circuit requires a new trigger for each pulse.
Lösungsbeispiel
R = 100k, C = 10 uF.
- 01T = 1.1 x 100000 x 0.00001
- 02T = 1.1 seconds
- 03T = 1100 ms
Häufig Gestellte Fragen
What triggers the monostable?
A negative-going pulse on pin 2 (trigger) that drops below 1/3 Vcc starts the timing cycle.
Can I retrigger during the pulse?
Standard 555 is not retriggerable. The pulse runs its full duration regardless of new triggers.
How do I make longer delays?
Increase R or C. For very long delays (minutes) use large capacitors or cascade two timers.
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