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DC Circuit Analysis Calculator

Calculates voltage drops and currents in a resistive series-parallel circuit. Features nodal analysis output and simplified component modeling.

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Category Electronics
V1 R1 R2 V_out
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About

Circuit verification is a fundamental step in hardware design. This tool simulates a standard DC Resistive Bridge / Series-Parallel configuration to determine the potential at specific nodes relative to the ground. It uses Kirchhoff's Current Law (KCL) to solve the system of linear equations representing the circuit topology.

By defining the supply voltage and resistor values, engineers can predict the bias point of a transistor stage or the reference voltage for a comparator. The solver assumes ideal components but provides a baseline for rapid prototyping before moving to complex SPICE environments.

circuit solver ohm's law voltage divider kirchhoff electronics

Formulas

For a voltage divider node with resistors R1 (top) and R2 (bottom):

Vout = Vin R2R1 + R2

Power dissipated by any component:

P = V2R

Reference Data

Law/RuleFormulaDescription
Ohm's LawV = IRVoltage across resistor.
KCL (Node)∑Iin = ∑IoutConservation of charge.
KVL (Loop)∑Vdrop = 0Conservation of energy.
PowerP = I2RHeat dissipation.
Series RRT = R1 + R2Additive resistance.
Parallel RGT = G1 + G2Additive conductance (1/R).

Frequently Asked Questions

This specific tool uses a fixed topology (Bridge/Divider) for rapid calculation. For arbitrary mesh networks with N-nodes, a matrix-based SPICE simulator is required.
Ensure you have accounted for the 'Load' effect. If you attach a load resistor in parallel with R2, the total resistance of the bottom leg decreases, pulling the node voltage down.