デンブロ 電子ブロック回路シミュレータ

Circuits are created simply by placing components on the grid. There's no need to draw lines. Adjacent edges connect automatically, allowing you to assemble circuits with just your fingers. ■ Place, Rotate, Move ・Tap an empty square to place a component. ・Tap again to rotate 90 degrees. ・Press and hold to remove. ・Switching to "Move" allows you to turn switches on and rotate knobs. Components have values ​​printed on them. Even with two identical resistors placed side-by-side, the circuit can be read by looking at the board. ■ What You Can See and Hear ・Light bulbs become brighter according to the current flowing through them. ・Connecting them in series makes them dimmer; connecting them in parallel keeps their brightness unchanged. ・Buzzers actually produce sound. The sound from an oscillator circuit is also generated by creating a waveform in real time. ・The voltage and current of the selected square are displayed as numbers. ■ Circuits That Change Over Time Placing capacitors and coils changes the board from a static image. You can observe the charging process, vibration, and damping at the same speed as the real thing. The waveform (scope) plots the voltage and current of each cell in chronological order. The measured frequency and the frequency calculated from the coil and capacitor are displayed side-by-side, allowing you to understand what determines the speed. You can also draw Bode plots by applying AC. ■ Assignments Solve the numbered assignments in order. Topics covered include: capacitor charging, coil back EMF, LC resonance, relays, transformers, RC/LC filters, tuning circuits, diodes and rectification, crystal radios, transistor amplification, current feedback bias, differential amplification, current mirrors, multistage amplification, push-pull and Class AB, negative feedback, multivibrators, LC oscillation (Colpitts-Hartley-Klup), crystal oscillation, Schmitt triggers, and operational amplifiers (inverting amplifier, summer, comparator, active filter, precision rectifier). Currently, there are 116 assignments, and more will be added. There is no single correct circuit. If it works as intended, you pass. There are multiple ways to assemble it, and all of them are considered correct. If you get stuck, open "See Example" and you'll see a circuit diagram with the same shape as the board and an explanation of why it works that way. ■ Things you can't touch in real life Parts that are difficult to obtain or dangerous are also placed on the board. Magnetic core memory is memory that doesn't disappear even when the power is turned off. The way the rings fall at a threshold directly translates to the mechanism of selecting one from the grid — you can see this mechanism at a speed you can follow with your eyes. Vacuum tubes can also be placed. While transistors are controlled by current, vacuum tubes are controlled by voltage — you can compare the difference of how the plate current changes even without current flowing through the grid by assembling them on the same board. You can also see numerically that rectification with a diode drops the voltage more significantly than with a semiconductor diode. By connecting tuning and detection, the basic framework of a vacuum tube radio is assembled. Connecting two vacuum tubes in a diagonal configuration creates the first multivibrator, made in 1917. You can also place neon tubes. These are components where the gas itself emits light; they conduct electricity rapidly above 65V and remain lit until the voltage drops to 50V. Even at the same 55V, whether it lights up or not depends on whether the voltage comes from above or below—this property alone allows you to create a continuously blinking circuit by adding a resistor and capacitor. ■ About this app • Circuit calculations and sound creation are all done within the device. The circuits you build are never shared externally. • No account registration required. • No ads. • Free of charge. We use Firebase to record bugs and track which problems have been solved. Details regarding its use are in our privacy policy. For learning about electricity and circuits, for preparing for and reviewing science experiments, and as an introduction to electronics projects.