Circuit Simulator bitGateLab vs Circuit Design & Simulation

Circuit Simulator bitGateLab is an electric circuits and analog electronics lab on your PC, phone or tablet: draw a circuit, measure it with multimeters and an oscilloscope, get its frequency response, turn it into block diagrams with the Laplace transform and build it on a 3D breadboard. Works offline, no account required. DRAW AND SIMULATE • DC, AC with phasors and time-domain transients, using modified nodal analysis (MNA), the same method SPICE uses. • Resistors, potentiometers, capacitors, inductors, transformers, thermistors and LDRs. • DC and AC voltage and current sources, a signal generator (sine, square, triangle and ramp) and dependent sources. • Diodes, Zener, LED, Schottky, NPN and PNP BJTs, N- and P-channel MOSFETs, JFETs and op amps with supply rails. • Undo and redo, copy and paste, rotate, replace components and node labels. MEASURE LIKE IN THE LAB • Voltmeter, ammeter, wattmeter and a multimeter-style probe on any node, pin or component. • Multichannel oscilloscope with a trace of every signal over time. • Bode plot (magnitude and phase) plus DC and frequency sweeps. LAPLACE AND CONTROL • Block diagrams: gain, H(s), integrator, differentiator, PID, delay, summing junction and saturation. • Turn your circuit into blocks and get its transfer function H(s). • Step response, poles and zeros, Bode plot and step-by-step diagram reduction. 3D BREADBOARD • Your circuit builds itself on a breadboard with resistors, capacitors, transistors, sources and wires. • Rotate, zoom and choose isometric, top, front or side view. PRACTICE EXERCISES • Generate fresh exercises on series-parallel simplification, mesh and nodal analysis, the Wheatstone bridge and AC RC, RL and RLC circuits. • Each exercise comes with its circuit, a graded question and a step-by-step solution. IMPORT AND EXPORT • Open SPICE netlists (.cir, .sp, .net) from ngspice or LTspice, including model libraries, and Falstad circuits. • Export to SPICE, Falstad and CircuiTikZ for your LaTeX documents, or as an image or PDF. FREE AND PREMIUM • Phone and tablet: every feature free, with circuits of any size and with ads; Premium removes the ads. • Premium: a monthly or yearly subscription, or a one-time lifetime purchase. FOR LEARNING AND TEACHING • Designed as a companion to an electric circuits course: whatever you work out by hand, you can check in the simulator. • Light and dark theme, European or American symbols. • 45 languages. PRIVACY No account and no cloud: your circuits are saved only on your device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://juchabit.com/privacy-policy/

Take circuits off the page: draw them, power them up, then build them by hand. SCHEMATIC • Standard symbols: resistors, capacitors, diodes, LEDs, Zener diodes, transistors, relays, switches, motors, buzzers, sensors, logic gates, op-amps, 555 timers and more • Choose IEC or ANSI (US) symbol style • Snap-to-grid wiring; rotate, flip and swap parts in a tap; Apple Pencil support • Color themes and art styles; export crisp images of your schematic SIMULATION • Turn a schematic into a working simulation in one tap. A checklist points out missing values and wiring problems one by one • Moving green dots show current; blue numbers show the voltage at each node • Flip switches, press buttons, turn potentiometers, change light and temperature, and the circuit responds instantly • Watch capacitors charge and discharge, transistors amplify and switch, relays latch, logic gates oscillate and 555 timers count down • Oscilloscope for waveforms; record the current animation and export it as a GIF BREADBOARD • Realistic breadboard, battery box, components and chips: follow the schematic and plug them in step by step • Or build freely, picking parts from the parts list • Power it up to check your work: does the lamp light, does the motor turn? • Analog and digital multimeters measure voltage, current and resistance EXAMPLES 12 complete examples: basic circuit, capacitor charge and discharge, rectifier with filter and regulator, sensors and transistors, Darlington pair, transistor latch, three-person voting circuit, logic-gate oscillator, relay motor reversing, op-amp oscillator, 555 oscillator and 555 timer. Each comes as a schematic, a simulation and a breadboard, and you can change anything. To keep your changes, save it as your own circuit. EVERYDAY USE • Syncs between iPad and iPhone through iCloud • Share a link and anyone can open your circuit in a web browser • No sign-up, no ads, no personal data collected • English and Chinese Great for physics and technology classes, electronics hobbyists and makers, and teachers demonstrating in class. MEMBERSHIP Free forever: drawing and exporting schematics, plus everything in the 12 examples (including their simulations and breadboards). Membership unlocks: simulating circuits you draw yourself, the breadboard for your own circuits, and art styles. • Yearly membership: auto-renewing subscription, billed yearly • Lifetime membership: one-time purchase Both support Family Sharing. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the end of the period. Manage or cancel in Settings → Apple Account → Subscriptions. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://saviteachingassistant.cn/circuit/privacy-en.html