The Engineering Keypad
(Just
the keypad is shown, Click the keypad to see the entire calculator and use your Web browser's Back
button to return to this page. This picture
also shows the modified View function (displays the y-register).)
An engineering calculator with many special functions:
a:
Calculates Chebyshev filter response for n
between 2 and 10, and ripple > 0, =< 3 dB.
aB: Calculates Butterworth filter response.
Zp: Calculates the parallel combination of two complex numbers,
i.e. ax+jby in parallel with cx+jdy.
P:R: Polar to Rectangular, and (Shift+) Rectangular to
Polar, coordinate conversion function.
Fo: Geometric Mean Calculator
dB: Calculates the power (and voltage/current) ratios in
decibels.
Ri: Calculates minimum loss pad for matching two impedances and solves parallel resistor problems.
l: Converts between wavelength in
meters, frequency in hertz, and period in seconds.
DT:
Calculates the surface area of a cylinder or rectangular block and the
temperature rise based on surface area and dissipated power.
rT:
Temperature Coefficient of Resistivity Calculator
rho: Calculate resistance based on the materials volume
resistivity.
Cm: Calculates the minimum capacitor required for a simple FWB power
supply.
p: Eight constants involving pi
(3.1415..).
W:
Ohms Law Calculator
f(x): Polynomial Calculator
w: Enter the frequency and
solve for 2pf, (2pf)²
and their reciprocals.
Fr: Resonant Frequency Calculator
Sr: Series Resonant Circuit Calculator
Pr: Parallel Resonant Circuit Calculator
Zn: Impedance of a ladder network
Calculator
Öx Square root of x. Ctrl+X
from the keyboard.
x²: x squared. Shift+Ctrl+X from the keyboard.
1/x: Reciprocal of x. X from the keyboard.
scl: Use this function for scaling passive components by
frequency and impedance.
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Last updated 04/30/2008
