Documentation | DirencHan

📘 Getting Started

DirencHan is a comprehensive web-based tool designed for electrical engineers, students, hobbyists, and professionals. It provides accurate calculations for various electrical parameters and circuit configurations.

Key Features

Real-time calculations with instant results
Support for multiple calculation types
Bilingual interface (English/Turkish)
Dark and light theme options
Responsive design for all devices
No registration or installation required

Ω Ohm's Law Calculator

V = I × R

Where V is voltage in volts (V), I is current in amperes (A), and R is resistance in ohms (Ω)

How to Use

Enter any two of the three values (voltage, current, or resistance), and the calculator will automatically compute the third value along with the power consumption.

Example Calculation

Given: Voltage (V) = 12V, Current (I) = 2A

Calculate: Resistance (R) = V / I = 12 / 2 = 6Ω

Power: P = V × I = 12 × 2 = 24W

Related Formulas

I = V / R    (Calculate current from voltage and resistance)
R = V / I    (Calculate resistance from voltage and current)
V = I × R    (Calculate voltage from current and resistance)
            

P Power Calculator

P = V × I

Where P is power in watts (W), V is voltage in volts (V), and I is current in amperes (A)

Power Calculation Methods

P = V × I        (Using voltage and current)
P = I² × R       (Using current and resistance)
P = V² / R       (Using voltage and resistance)
            

Example Calculation

Given: Voltage (V) = 230V, Current (I) = 5A

Calculate: Power (P) = V × I = 230 × 5 = 1150W = 1.15kW

E Energy & Cost Calculator

Energy (kWh) = (Power × Time) / 1000

Calculate energy consumption and associated costs based on power usage and time

How to Use

Enter the power consumption in watts, the time period in hours, and the cost per kilowatt-hour. The calculator will provide total energy consumed and the cost for various time periods.

Example Calculation

Given: Power = 100W, Time = 5 hours, Cost = $0.12/kWh

Energy: (100 × 5) / 1000 = 0.5 kWh

Cost for 5 hours: 0.5 × $0.12 = $0.06

Daily cost (24h): 2.4 kWh × $0.12 = $0.288

→ Series Resistors Calculator

R_total = R₁ + R₂ + R₃ + ... + Rₙ

For resistors connected in series, the total resistance is the sum of all individual resistances

How to Use

Enter resistor values separated by commas (e.g., 100, 220, 330, 470). The calculator will compute the total series resistance.

Example Calculation

Given: R₁ = 100Ω, R₂ = 220Ω, R₃ = 330Ω

Calculate: R_total = 100 + 220 + 330 = 650Ω

∥ Parallel Resistors Calculator

1/R_total = 1/R₁ + 1/R₂ + 1/R₃ + ... + 1/Rₙ

For resistors connected in parallel, the reciprocal of total resistance equals the sum of reciprocals of individual resistances

Important Note

The total resistance in a parallel configuration is always less than the smallest individual resistor value.

Example Calculation

Given: R₁ = 100Ω, R₂ = 200Ω

Calculate: 1/R_total = 1/100 + 1/200 = 0.01 + 0.005 = 0.015

R_total = 1 / 0.015 = 66.67Ω

Special Case: Two Resistors

R_total = (R₁ × R₂) / (R₁ + R₂)

📊 Common Electrical Values

Standard Voltage Levels

Application	Voltage
Battery (AA, AAA)	1.5V
USB Power	5V
Car Battery	12V
US Residential	120V
Europe/Turkey Residential	230V
Three-Phase Industrial	400V

Unit Prefixes

Prefix	Symbol	Multiplier	Example
Mega	M	× 1,000,000	1 MΩ = 1,000,000 Ω
Kilo	k	× 1,000	1 kΩ = 1,000 Ω
Milli	m	÷ 1,000	1 mA = 0.001 A
Micro	µ	÷ 1,000,000	1 µA = 0.000001 A

💡 Tips & Best Practices

Safety Guidelines

Always verify calculations with professional tools before implementing in real circuits
Consult licensed electricians for high-voltage or high-power applications
Use appropriate safety equipment when working with electrical circuits
Never work on live circuits without proper training and equipment

Calculation Tips

Double-check your input values for accuracy
Use consistent units throughout your calculations
Consider tolerance values when selecting real-world components
Account for wire resistance in long cable runs

❓ Frequently Asked Questions

Is this calculator suitable for professional use?

This calculator provides accurate calculations based on established electrical formulas. However, for safety-critical or professional applications, always verify results with certified testing equipment and consult qualified professionals.

Can I use this for AC circuits?

The current calculators are designed for DC circuits and basic resistive AC circuits. For complex AC analysis involving reactance, impedance, and phase angles, specialized tools are recommended.

How accurate are the calculations?

Calculations are performed using standard IEEE floating-point arithmetic and are accurate to several decimal places. However, real-world factors like component tolerances, temperature effects, and parasitic elements may affect actual circuit behavior.

📞 Support & Contact

If you have questions, suggestions, or need assistance with the calculators, please visit our contact page or reach out to us directly.

Email: [email protected]
Contact form available on the main website