Electrical Engineering Toolbox

p = pico, n = nano, u/µ = micro, m = milli, k = kilo, M = mega, G = giga

Resistor Calulcator



V1 V
V2 V
V3 GND (0 V)

R1
R2

I A

P (R1) W
P (R2) W

LED calculator



Input

Vs V
Vf V
If A

Output

R

P (R) W
P (LED) W

Trace Calculator


Input

Trace Width mm
Trace Width mil
Trace Length mm
Trace Length mil
Copper Tickness µm
Copper Tickness Cu oz/ft2

Output

Limit @ Ta + 25°C

External Trace Max Current A
Internal Trace Max Current A
Trace Resistance
Trace Power Loss W

Timer Calculator


Input

Clock Frequency Hz
Clock Divider
Prescaler
Counts

Output

Tick Frequency Hz
Tick Period s
Interrupt Frequency Hz
Interrupt Period s