價格：免費
更新日期：2014-11-19
檔案大小：830k
目前版本：1.0
版本需求：Android 2.2 以上版本
官方網站：http://www.eeautocalc.com
Email：rcsink_98@yahoo.com
聯絡地址：16835 Algonquin St., #206 Huntington Beach, CA 92649
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.
