555 Calc
Free
1.5for iPhone, iPod touch
Age Rating
555 Calc Screenshots
About 555 Calc
This App calculates registors value, when designing the circuit using Timer IC 555.
How to
(1) Input Frequency value.
(2) Input Duty Ratio.
(3) Input C1 Value.
(4) Touch ‘Calculate’ button.
(5) Registors value will be displayed.
Note.
* Set Duty Ratio to 50 ~ 99.
* If you set Duty Ratio to 50, R1 value will be set to 0.
How to
(1) Input Frequency value.
(2) Input Duty Ratio.
(3) Input C1 Value.
(4) Touch ‘Calculate’ button.
(5) Registors value will be displayed.
Note.
* Set Duty Ratio to 50 ~ 99.
* If you set Duty Ratio to 50, R1 value will be set to 0.
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What's New in the Latest Version 1.5
Last updated on Aug 27, 2023
Old Versions
* Add the calculate button.
* Add the duty ratio graph.
* Fix formulas.
* Add the duty ratio graph.
* Fix formulas.
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Version History
1.5
Aug 27, 2023
* Add the calculate button.
* Add the duty ratio graph.
* Fix formulas.
* Add the duty ratio graph.
* Fix formulas.
1.4
Nov 19, 2022
Add a numerical formula on the screen.
1.3
Oct 28, 2022
* Fix for R1 values not being displayed in dark mode.
1.2
Sep 19, 2019
- Support Dark Mode
- Support iOS 8 or later
- Support iOS 8 or later
1.1
Dec 13, 2016
* Support over 4 inch display's iPhones.
1.0
Apr 29, 2014
555 Calc FAQ
Click here to learn how to download 555 Calc in restricted country or region.
Check the following list to see the minimum requirements of 555 Calc.
iPhone
Requires iOS 11.0 or later.
iPod touch
Requires iOS 11.0 or later.
555 Calc supports English, Japanese