Bandgap Reference Calculator (BGRC) aids in the design and analysis of a Brokaw bandgap reference circuit. It calculates all circuit parameters and the output voltage as a function of junction temperature.
HVAC duct sizing and analysis. Accommodates round and rectangular duct sizes and variations in roughness, air density, and dynamic viscosity. Uses DARCY function. Works on all 48 and 49 models.
Graphically represents the state of the stresses or strains, using Mohr's Circle. The program performs the necessary calculations to find the principal directions and principal values of a symmetric tensor in XYZ Cartesian coordinates, and the maximum values for the shear stress or shear strain. In-plane case, the stress or strain that act on plane defined by angle θxy (counterclockwise positive), the program additionally shows the normal stresses or strains, shear stresses or strains, and the angle necessary for the stresses or strains to be maximum. In a three-dimensional case, the stress or strain act on plane defined by normal vector VNP (three-dimensional vector), the program additionally shows the normal and shear stress or strain vectors.
Tables for Fanno, Isentropic and Rayleight flows. Just put the value on stack, run the program, enter what sort of value it is (M, P/Po, etc), and you can change K value. Made in User RPL.
Calculates the density of water, given the temperature in Celsius, pressure in Pascals, and whether the water is pure or from the tap. Based on Tanaka's work.
Simple program to analyze the kinetic of a rigid body in 3D-space. You can get the maximum, the minimum and the median inertia momentum. Also, you can obtain the angular momentum and solve the Euler's Equation.
Effective Number of Bits Calculator (ENOB) aids in the design and analysis of data converter application circuits. It calculates ENOB, SINAD, resolution, signal bandwidth, oversample rates, DNL, clock jitter, analog noise, and THD.
Calculates enthalpy variations given initial and final temperature, or calculates final temperature, given the initial temperature and the enthalpy variation.
The premier structural analysis software for both the 48G and 49/50 series calculators. Its ease of use, flexibility, power and capabilities combined in one package are not seen in any other program available, either commercially or as freeware. FEM48/49 solves frames, trusses and continuous beams. Includes wizards for geometry, sections and loads. Links to SED48/49 database. An extensive manual is included. Completely written in SysRPL. SR6 has been adapted for the larger screen of the 49g+ and 50g.
This library evaluates the solar irradiation on a bent plane, looking for a bettering of both the dimensioning and analysis of the solar water heating systems.
Calculates the moment of inertia and the neutral axis of built up rectangular section. This program is ideal for calculating the moment of inertia of composite sections such as bridge decks and all other I-shaped beams.
Calculates moments of inertia, center of gravity and area of flat sections formed by rectangles, right triangles, circles and quarter-circles. Also supports coordinate-oriented input and language setup.
This is a beta release of the upcoming Mohr program for the 49. Currently it will calculate principal stresses, a well as those at a prescribed plane angle. It is also (I believe) the first program for the 49G to implement Step by Step solutions. Version 1.0 will include graphical construction of Mohr's circle and element diagrams.
A simple and totally functional User-RPL program to convert parameters of two-terminal-pair networks. This program can convert between parameters of admittance [g], impedance [r], transmition [T] and hybrids [m] y [h]. Also, it can help you showing relationships that have to be met for a network to be symmetric or reciprocal.
Properties of Water and Air is a library with three applications that allow one to
obtain the properties of water (density and pressure of vapor) as a function of the temperature and the atmospheric pressure (like a function of the altitude).
Converts rotations from/to Euler sequence, RPY sequence, matrix, quaternion and angle/axis of rotation. Euler and RPY sequences accepts all 12 axis orders. Also some quaternion operators.
SED48/49 is a Structural Engineering Database. It can be used for steel sections, sheet piles etc. It can be used by FEM48/49 as an external properties database. It is also completely programmable so you can use it in your own apps. Completely written in System RPL. Includes extensive manual. Ported to the HP 49 by Edwin Córdoba. SR1 includes PDF manual and AISC database.
The program determines for a single-span girder having restraints with reference to rotations at both ends the support moments, reaction forces and maximum field moment. The degrees of restraints may be in the range of 0 % to 100 %. Accepted are up to 25 trapezoidal knife-edged and individual loads. Now the combination of attached end-/cantilever moments and elastic restraint at the same support is provided. Tested for both the 49g+ and 50g.
This program determines the equivalent spring constants (vertical and rotational spring) of a one-field beam at any point of the length given its rigidity and the conditions of support at both ends. Tested on the HP 49g+ and 50g.
Statistical Process Control Calculator (SPCC) aids in the prediction and analysis of process yield. It calculates defects per million, yield, process shift, standard deviation, mean, and the lower and upper specification limits.
Thermal Noise Calculator (TNC) aids in the analysis of thermal noise found in resistors and other noise sources. It calculates noise voltage (µVpp and µVrms), noise density, Johnson resistance, temperature, upper and lower frequency limits, and corner frequency.
This library contains five state equations (virial, van der Waals, Redlich-Kwong, Redlich-Kwong-Soave, Peng-Robinson), six equations for activity coefficients (Symmetric, Margules, Van Laar, UNIQUAC, UNIFAC), and four programs for calculation of bubble temperature and pressure, and dew temperature and pressure. Also includes the Antoine equation for 3 and 5 parameters.
Improved (graphic interface) version of the program "steam" by William David Eisenhauer and Allen Arnold, Portland State University. It doesn't change any calculation property, it only makes it easier to use.
Imperial Units interface for the version of the program "steam" by William David Eisenhauer and Allen Arnold, Portland State University. The calculations are not changed.
Structural engineering application which can calculate the following things of any given truss: member elongations, member normal force, member normal stress, nodal displacements, and reaction forces. Written in System RPL (includes source code) with some assembly language and includes a comprehensive manual in Word format. SR2 includes Spanish HP 49 library.