DC Voltage Calculator

Calculate DC circuit parameters including voltage, current, resistance, and power. Enter any two known values to find the missing parameters using Ohm's Law.

DC Circuit Analysis

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        โ”‚                         โ”‚
        โ”‚    DC Voltage Source    โ”‚
        โ”‚         (V)             โ”‚
        โ”‚                         โ”‚
        +โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ฌโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ฌโ”€+
                  โ”‚             โ”‚
                  โ”‚    Load     โ”‚
                  โ”‚    (R)      โ”‚
                  โ”‚             โ”‚
                  โ”‚   Current   โ”‚
                  โ”‚    (I)      โ”‚
                  โ”‚             โ”‚
                  โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Note: Enter any two values to calculate the remaining DC circuit parameters.

About DC Voltage and Circuits

Direct Current (DC) voltage maintains a constant polarity and magnitude over time. DC circuits are fundamental in electronics and are used in batteries, solar panels, and electronic devices.

DC Voltage Sources:

  • Batteries: Chemical energy converted to electrical energy
  • Solar Panels: Light energy converted to electrical energy
  • DC Power Supplies: AC to DC conversion
  • Fuel Cells: Chemical reaction producing DC voltage

DC Circuit Characteristics:

  • Constant Current: Current flows in one direction only
  • No Frequency: DC has zero frequency
  • Simple Analysis: Uses basic Ohm's Law relationships
  • Energy Storage: Can be stored in batteries and capacitors

Common DC Voltages:

  • 1.5V: AA, AAA batteries
  • 3.7V: Lithium-ion cell
  • 5V: USB power
  • 12V: Car electrical system
  • 24V: Industrial control systems
  • 48V: Telecom systems

Applications:

  • Electronic devices and circuits
  • Automotive electrical systems
  • Solar power systems
  • Battery-powered equipment
  • LED lighting systems