Prefer to use f c while many scientists use ω.Įnter 2 values and the calculator will calculate the 3rd value. The time constant ω is equivalent to 2 π f c. In other words the output signal is 70.7% or 1/sqrt(2) below the input signal.įor a first order RC-filter the cut-off frequency (f c) is The voltage at the output of the filter is 3dB below the input. The cut-off frequency is defined as the frequency at which Enter only numbers without any letters (units).įirst order RC-filter (high/low pass filter) If you have only two resistors then enter only two values and leave the other blank. This calculator calculates the equivalent resistor (Rsum) of two parallel resistors or three parallel resistors. Read Stony Brook University's paper that reports how their "virtual breadboard helped students to prepare for their labs, and significantly reduced the amount of time teaching assistants had to spend helping students in the actual lab.If there is a load applied on the output (U2) then use for R2 the equivalent resistor which consists of the actual R2 value and the load resistor.Ĭalculate the equivalent resistor for a number of parallel resistors.We recommend this quick Breadboard Infographic from Make Breadboarding Workshop or the longer Breadboard Tutorial from Science Buddies. If you are unfamiliar with the breadboard, there are many resources available online that explains how they work.The holes in the breadboard connected in blue are electrically connected.To turn a switch on or off, just click on it. The green color indicates positive voltage. When you select a different schematic, the ones where you have completed the breadboard will be shown with a green background. When the applet starts up you will see an animated schematic of a simple LRC circuit.Drag from the hollow circles to the solid circles to make connections. Select gates from the dropdown list and click 'add node' to add more gates. Investigate the behaviour of AND, OR, NOT, NAND, NOR and XOR gates. When you wire up the actual circuit using the low cost Home Laboratory Kit, do remember to connect the VCC and GND wires. A free, simple, online logic gate simulator. All the VCC (red wire) and GND (black wire) connections are already done.
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