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Get Astable 555 Timer old version APK for Android
Enter Ra, Rb & C to calculate hi & lo duration, frequency and other values...
Adding a second resistor Rb to the 555 timer and connecting the trigger input to the threshold input causes the timer to self-trigger and run as a multivibrator. The capacitor C will charge through Ra & Rb and discharge through Rb only. The duty cycle can be controlled by changing the values of Ra and Rb. Input Ra, Rb (in kOhms) & C (in uFarads) then push the Calculate button to get the values for the output high-level duration tH and low-level duration tL and frequency. Output driver and output waveform duty cycles are also determined.Last updated on Oct 18, 2015
Minor bug fixes and improvements. Install or update to the newest version to check it out!
Uploaded by
Pepe Botellas
Requires Android
Android 2.2+
Category
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Astable 555 Timer
1.0 by Randle C. Sink
Oct 18, 2015