# Description

This Ohm's Law calculator includes the following

1. Ohm's Law Calculator

2. LED Resistor Calculator

3. 555 Astable Circuit Calculator

1. Ohm's Law Calculator

2. LED Resistor Calculator

3. 555 Astable Circuit Calculator

Help Includes

- All formulas

- Ohm's Law Wheel

- Resistor Color Chart

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# Reviews

Helpfulness

Newest

Rating

Helpfulness

All Versions

All Versions

Latest Version

3.7

3 total

5 0

4 2

3 1

2 0

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# Additional information

Updated

October 4, 2010

Size

141k

Installs

100 - 500

Current Version

1.0

Requires Android

1.5 and up

Content Rating

Unrated

Warning – content has not yet been rated. Unrated apps may potentially contain content appropriate for mature audiences only.

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CityJams

Developer

# Similar

## 555 Timer Tool (Ad Free)

This is a tool to help electronics hobbyists easily select component values for the ubiquitous 555 Timer chip.

You simply enter the frequency (or alternatively the delay period) that you want your 555 timer chip to run at - and an initial timing capacitor value - then the 555 Timer Tool calculates a list of the best combinations of other components that meet your requirements.

As a convenience, you can also use touch gestures to snap component values up or down to the next preferred value. To do that just stroke the values displayed on the circuit diagram. Stroke upward to adjust upwards, or stroke down to adjust downwards.

The preferred value range that values are snapped to is selected by choosing "Settings" from the options menu.

For example, suppose you wanted a 555 timer to oscillate at 440 Hz (the A above middle C on the piano keyboard) then just:

- click the f (frequency) button on the circuit diagram, enter 440 then press the OK button

- click the C1 button on the circuit diagram, enter 47, then press the nF button, then press the OK button.

The 555 Timer Tool calculates combinations close to 440 Hz and updates the values on the circuit diagram with the closest combination.

How do you know to key in 47 nF as the initial value for C1? ...well, you don't - but you have to start somewhere and 47 nF is middle of the road!

## 555 Calculus

Rafcrit

1

Simple and intuitive tool for calculating the components to be used with the 555 timer integrated. The calculation can be done for that monostable and astable configuration.

- Configuration astable: inserting a desired frequency and duty cycle will be calculated the commercial components (R and C) are most suitable. With commercial components obtained appeard real values of frequency and duty cycle.

Chance to do the reverse calculation (frequency -> components).

- Configuration Monostable (as Timer): just enter the desired time and will be calculated R and C as appropriate.

- Configuration astable: inserting a desired frequency and duty cycle will be calculated the commercial components (R and C) are most suitable. With commercial components obtained appeard real values of frequency and duty cycle.

Chance to do the reverse calculation (frequency -> components).

- Configuration Monostable (as Timer): just enter the desired time and will be calculated R and C as appropriate.

## Timer IC 555 Calculator Pro

Peter Ho

1

IC 555 is a basic timer IC for hobbyist or electronic engineers. This app is used to calculate monostable and astable circuit

Features:

1. Calculate monostable circuit

2. Calculate frequency of astable circuit

3. Calculate component values of monostable and astable circuit. Save component values in CSV file (Excel file)

4. Can use preferred values of capacitors and resistors

Features in PRO version only:

1. Upload CSV file to Dropbox

2. No Ad

3. Can use preferred value 1% for resistor and 5% for capacitor

4. No limitation

Note :

1. For those who need support please email to the designated email.

Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

Tags : Timer IC, NE555,LM555 Calculator, Basic electronics

## Ohm's Law

This is a user-friendly Ohm's law app that allows you to calculate any 2 unknown values by entering 2 known values.

As you enter the known values, the other two unknown values are automatically calculated and filled in in blue.

This is a great calculator for students working with Ohm's Law, electricians, or other individuals working in the electrical-related fields.

Tags: Ohm's law, calculator, electrical, electronic, electrician, free,

## OHM'S LAW CALCULATOR

OHM'S LAW CALCULATOR

SIMPLE APPLICATION THAT WILL CALCULATE

VOLTAGE, RESISTANCE, CURRENT and POWER

FROM ANY 2 GIVEN VALUES.

WILL CALCULATE USING CORRECT FORMULA

WITH GIVEN VALUES.

USEFUL TOOL FOR ANY ELECTRICAL / ELECTRONIC ENGINEER.

PLEASE CHECK OUT MY OTHER APP'S.

BUY PURCHASING PAID APP'S, HELPS

TOWARDS DEVELOPING MORE FREE APP'S.

ELECTRICAL AND GAS ENGINEERING APP'S AVAILABLE.

IF YOU HAVE AN IDEA FOR AN APP AND WOULD LIKE

TO SEE IT ON ANDROID, LET US KNOW....

coops5575@gmail.com

www.coopersoft.co.uk

Please rate this app if you like it.

If you would like any features added,

or would like a specific app created

for Android Market, then please email

us at coops5575@gmail.com.

## VaporCalc

E-Cigarette / Advanced Personal Vaporizer Calculator

VaporCalc's Coil Calculator simplifies the process of building your own Coils removing all the guesswork and allows you to get the results you want on the first attempt. The E-Liquid/eJuice Calculator does all the complex math from the simple to the most extensive recipes. The Ohm's Law Calculator allows you to easily discover the amperage, wattage, voltage, and resistance of your atomizer - to help you decide the setup your device/battery should use for safety and vapor production.

VaporCalc's Coil Calculator simplifies the process of building your own Coils removing all the guesswork and allows you to get the results you want on the first attempt. The E-Liquid/eJuice Calculator does all the complex math from the simple to the most extensive recipes. The Ohm's Law Calculator allows you to easily discover the amperage, wattage, voltage, and resistance of your atomizer - to help you decide the setup your device/battery should use for safety and vapor production.

*E-Liquid Calculator*

- Create simple to complex recipes with ease

- Use up to 20 different flavors

- Display in ml or Drops

- E-Liquid Calculator has save recipe feature.

*Coil Calculator*

- Helps build varying coil types (Single, Dual, Triple, Quad, Hexa, Octo, and Parallel/Dual Parallel)

- Round Wire Coils and Ribbon Wire Coils.

- Coil Calculator remembers last used settings and you may also load/save coil builds.

*Ohm's Law Calculator*

*Unit Converter*

- Converts millimeters to inches and inches to millimeters.

VaporCalc is a work in progress, your suggestions help shape its progression. If there is a feature that you believe would benefit the vaping community - please let me know, all suggestions will be considered.

## Timer IC 555 Calculator

Peter Ho

1

IC 555 is a basic timer IC for hobbyist or electronic engineers. This app is used to calculate monostable and astable circuit

Features:

1. Calculate monostable circuit

2. Calculate frequency of astable circuit

3. Calculate component values of monstable and astable circuit. Save component values in CSV file (Excel file)

Note :

1. For those who need support please email to the designated email.

Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

Tags : Timer IC, NE555, LM555, Calculator, Basic electronics

## 555 Timer Tool

This is a tool to help electronics hobbyists easily select component values for the ubiquitous 555 Timer chip.

You simply enter the frequency (or alternatively the delay period) that you want your 555 timer chip to run at - and an initial timing capacitor value - then the 555 Timer Tool calculates a list of the best combinations of other components that meet your requirements.

As a convenience, you can also use touch gestures to snap component values up or down to the next preferred value. To do that just stroke the values displayed on the circuit diagram. Stroke upward to adjust upwards, or stroke down to adjust downwards.

The preferred value range that values are snapped to is selected by choosing "Preferences" from the options menu.

For example, suppose you wanted a 555 timer to oscillate at 440 Hz (the A above middle C on the piano keyboard) then just:

- click the f (frequency) button on the circuit diagram, enter 440 then press the OK button

- click the C1 button on the circuit diagram, enter 47, then press the nF button, then press the OK button.

The 555 Timer Tool calculates combinations close to 440 Hz and updates the values on the circuit diagram with the closest combination.

How do you know to key in 47 nF as the initial value for C1? ...well, you don't - but you have to start somewhere and 47 nF is middle of the road!

## 555 Timer Calculator (NE555)

This is a calculator designed and dedicated to calculating the resistor and capacitor values for the popular NE555 square wave generator.

This is unlike the other calculators you will find floating around. This calculator generates actual, usable component values; values that are found in your kit. No longer will you be asked to provide a 2546.74856Ω resistor.

This calculator will also allow you to tell it which components to use, based on what you have available. Don't have a 10KΩ resistor, or a 4.7 nF capacitor? Remove it from the list and you'll never be asked to use one.

This is a brute force calculator. Meaning it calculates every possible combination and if it comes within 1% of your desired frequency it will display it as a result. If battery concerns or the speed of the results is of concern, users can opt to have the calculations done via remote server. Your custom component list is still used for this process, but results can be generated in a fraction of the time.

Feedback and feature requests are always welcome. No comment too sour!

Explanation of permissions:

Full Internet access required for-

*Ads

*Remote calculation of values

Full source of version 1.7 can be found at:

http://stuff.foamcoffee.com/android/Calc555.tar.gz

## Ohm's Law Calculator & Guide

This is an Ohm's Law Calculator with a built-in mini-guide to refer to if required.

The calculator is very easy to use, enter two known values, select the units, press 'Calculate' and the other two values will be displayed instantly!

The guide contains 7 parts:

• Ohm's law

• Watt's law

• Adding resistances

• Voltage formulae

• Current formulae

• Resistance formulae

• Power formulae

If you want to be able to understand how the Ohm's law calculations are carried out, or would like a handy reference guide, this is the app for you!

## Electronics Toolbox

Peter Ho

1

This app is a collection of basic electronic calculators. It is suitable for hobbyist, electronic engineers or professionals.

This is the free version, which contains ads; you can also buy from the Market the PRO version of the app to support the developer, unlock more features and get rid of the ads.

Features

• Calculate resistance of 2 resistors in series / parallel

• To find out combinations of 2 resistors in series / in parallel making a desired resistance

• Calculate resistor values of voltage divider and find out combinations of resistance making a desired ratio

• Calculate resistor values of inverting amplifier gain and find out combinations of resistance making a desired ratio

• Ohm's Law calculation

• Star-delta conversion

• RC charging circuit : Calculate time constant by R and C

• RC Filter : Calculate cutoff frequency by resistor and capacitor value and find out combinations of resistance and capacitance making a desired cutoff frequency

• RL Filter : Calculate cutoff frequency by resistor and inductor value and find out combinations of resistance and inductance making a desired cutoff frequency

• LC Filter : Calculate resonant frequency by capacitor and inductor values and find out combinations of capacitance and inductance making a desired resonant frequency

• Calculate monostable circuit

• Calculate frequency of astable circuit and find out combinations of capacitance and resistance making a desired astable frequency

Features in PRO version only:

1. No Ads

2. No limitation

Pro version :

http://play.google.com/store/apps/details?id=com.peterhohsy.eecalculatorpro

Note :

1. For those who need support please email to the designated email.

Do NOT use either the feedback area to write questions, it is not appropriate and that is not guaranteed that can read them.

Tags : basic electronics, parallel circuit, series circuit, ratio calculator, Ohm's law, Star-delta, RC charging circuit, RC filter, RL filter , LC filter, Timer 555 monostable, Timer 555 astable, electronics toolbox

## Ohm's Law PLUS

**************************

YOU can HELP us, by translating the app into your language. To do so follow the link and fill the form, it will cost you no more than 3 Minutes.

http://goo.gl/0n58n

**************************

YOU can HELP us, by translating the app into your language. To do so follow the link and fill the form, it will cost you no more than 3 Minutes.

http://goo.gl/0n58n

**************************

An easy ohm's law caculator, that shows the connection between voltage, current, resistance and power.

No calculation-button, immediate calculation - FAST!

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3. Percent Markups (increase by)

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6. Percentage Difference (Change)

7. Percentage (what % of) i.e. x is what percentage of y

2. Percent Discounts (sale price)

3. Percent Markups (increase by)

4. Percent Margin (selling price)

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6. Percentage Difference (Change)

7. Percentage (what % of) i.e. x is what percentage of y

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