Pocket circuit lab

Place a part.
Wire it. Solve for the operating point.

A tactile schematic sandbox that stamps every resistor, source and diode into a real DC solver — then lets you probe each node on a built-in scope.

Open the board See how it solves

3 saved schematics · swipe to open a tool

Working: Voltage divider Node N1 · energised

Mottad Maskap home screen — the Circuit lab with a Board tool card and an Open board button

What's inside

Four tools, one honest solver.

Nothing is faked. Every element you drop carries the exact stamp the solver uses for it, so the numbers you read back are the numbers the circuit actually holds.

Board · Place · Wire · Move · Erase

Build on a live grid

Drop a component, wire its terminals to another, then hit Solve for the DC operating point. Grid snap keeps every trace clean while your part count climbs.

Place
Wire
Move
Erase
Save

Board editor with Place / Wire / Move / Erase modes and a palette of resistor, capacitor, inductor and source symbols

Operating point · Heatmap

See the node heatmap

Solve turns the schematic into a colour-graded map of node potentials — GND through N2 to a peak-magnitude N1 glowing gold at 10.0 V — with branch currents printed on every wire.

Heatmap
Voltages
Currents

Operating point view showing a node heatmap from GND to N1 with 5.0 mA branch currents

Scope · Voltage & Current

Probe it on the scope

Pick a probe node, dial the timestep down to 10.0 µs and the window to 5.0 ms, then Run. Watch Node 1 and Node 2 trace out across two switchable channels.

Node 1
Node 2
Timestep
Window

Scope screen with voltage and current channels, probe selectors and timestep and window sliders

Library

Keep a shelf of circuits

Load, Duplicate, Rename or Delete any saved schematic. Start from a Voltage divider, an RC low-pass or a Diode half-wave clamp — each three parts, three nodes.