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Engineering Calculators

54 free tools

Resistors

Parallel Resistor
Series Resistor
Voltage Divider
Resistor Colour Code
Standard Resistor Value
Resistor Power Rating
NTC Thermistor
SMD Resistor Code
LED Series Parallel Array

Capacitors & Inductors

Parallel Capacitor
Series Capacitor
Capacitor Charge
Capacitive Reactance
Inductive Reactance
LC Resonance
Capacitor Code
Coil Inductance
Series RLC Impedance

Timing & Signals

RC Time Constant
555 Timer
PWM
Op-Amp Gain
RC Low Pass and High Pass Filter
RL Time Constant
Decibel
RMS, Peak and Average
Frequency and Wavelength

Power & Wiring

Ohm's Law
LED Resistor
Wire Gauge and Voltage Drop
Zener Diode Voltage Regulator
Battery Life
LM317 Voltage Regulator
Transformer Turns Ratio
Ripple Voltage and Smoothing Capacitor
Buck Converter Inductor
Heatsink Thermal Resistance
Battery Charge Time

PCB Design

PCB Trace Width
PCB Via Current Capacity
PCB Trace Resistance
Microstrip Impedance
Stripline Impedance
Differential Pair Impedance
Coplanar Waveguide Impedance
PCB Plane Capacitance
Via Inductance
PCB Trace Inductance
PCB Crosstalk
PCB Copper Pour Thermal Resistance
Solder Stencil and Paste Volume
PCB Annular Ring and Pad Size
Thermal Via Array
PCB Panelization

Every calculator draws the circuit live and comes with a worked guide. Values type as 4k7, 100n or 2.2M.

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PCB Tools

16 calculators

PCB Trace Width
PCB Via Current Capacity
PCB Trace Resistance
Microstrip Impedance
Stripline Impedance
Differential Pair Impedance
Coplanar Waveguide Impedance
PCB Plane Capacitance
Via Inductance
PCB Trace Inductance
PCB Crosstalk
PCB Copper Pour Thermal Resistance
Solder Stencil and Paste Volume
PCB Annular Ring and Pad Size
Thermal Via Array
PCB Panelization

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