Lab · Electrical Engineering

Capacitors & Transients Lab

DC source Vf · resistor R · capacitor network · initial voltage V0.

Presets

Circuit inputs

1 capacitors · 1 series groups · Single capacitor

Group 1 · single

1/8 capacitors · 1/4 groups
Advanced input

Inspect state at t = 100 ms

Network · RC transient · Energy · Time plots

Capacitor network

Network

RVf+−i(t)G1Vc(t) · left → right reference+−

Equivalent capacitance C_eq

100 µF
TopologySingle capacitor
Source / final Vf5 V
Resistor R1 kΩ
Capacitor voltage Vc(t)3.161 V
Current i(t) · arrow reference1.839 mA
Group 1 equivalent C100 µF

One parallel group. Capacitors within a group share its voltage; their charges add. Negative current flows opposite the arrow.

State at t = 100 ms

Network Vc

3.161 V

Total charge Q

316.1 µC

Total stored energy

499.5 µJ

Group 1 · 3.161 V · 316.1 µC

CapacitorGroupCQVStored E
1100 µF316.1 µC3.161 V499.5 µJ

Sum of individual stored energies: 499.5 µJ · network stored energy: 499.5 µJ

Model

  • · Ideal linear capacitors and resistor; ideal DC source Vf applied at t = 0 with Vc(0) = V0. Vf = 0 is a discharge through R.
  • · Supported networks: a single capacitor, a series chain, a parallel bank, or a series chain of parallel groups. Other topologies are refused.
  • · Series groups are assumed to start uncharged together, so they always carry the same charge.

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