This file contains equations of the DC motor in simple compact form. It's useful because it is possible to insert values and the program returns the equation of the motor in the variable EQ, for using with Solve or something else.
ALBW = Allocated Bandwidth. This is a program for satellite communication engineers and planners. It determines the amount of bandwidth required to accommodate a carrier signal on a satellite transponder, given the data rate, coding, and modulation methods. Version 1.1 incorporates occupied bandwidth.
Calculate coils wound on iron-powder toroidal cores by Amidon Corp. Program contains a selectable cores database and returns inductance, giving the coil turns, or the required turns, giving the required inductance. Maximum wire coil diameter, in mm, is also returned. Tested on 49G+, but it should be suitable also on 48 series calculators.
Given filter parameters gives the analog form of the transfer function of a filter using the classic approximations: Butterworth, Chebyshev, Inverse Chebyshev and Cauer. Translates in frequency.
Accurately calculates magnetic field density of a straight solenoid at any point outside or inside, given solenoid dimensions, current and number of wire turns (using Biot-Savart).
Makes punctual DC and AC simulations, and plots AC and transient analysis. Supplies the user with all matrices used. Version 3.0 includes the CSim Descriptor and other interface improvements. For people familiar with past versions of CSim only.
A comprehensive 63-page paper describing the functionality of Circuit Simulator, for CSim 2.61, explaining how to do DC and AC analysis and transient analysis.
Library designed to simulate resistive circuits of DC with a very friendly environment. It's also able of calculating the Thevenin equivalent circuit between any two given nodes.
Upon entering the impedance, admittance, voltage and current for the receiver, this program gives the regulation, power, tension and current of the transmitter.
Cirk is a circuit simulator (node voltage as output), it can use symbolic elements; for instance, suppose there is a resistor between two nodes, you can assign symbol R as resistivity. Circuit analysis is made in S domain (Laplace transform).
Makes basic electronics easier. Given the 5 resistor values for a bridge with either the current through or the voltage across the bridge, it returns the voltage and the current for each resistor.
Demonstration of a DSP. Uses a predefined function (sin(x) is used, but you can change it) to generate an array of x and y coordinates using the summation function. Draws a scatter plot, adds noise, draws the plot again, and more.
Here's a digital circuit simulator for the HP 48. It has 8 internal primitives: AND, OR, XOR, NOT, BUF (buffer), HI (node tied to logic 1), LO (node tied to logic 0) and CLK (clock generator of definable high and low times). It also supports nested macros defined from these elements.
Digitician is a combination of two programs that, used together can make life much easier for anyone who must deal with digital logic problems. The first program performs reductions of Karnaugh maps by Quine-McCluskey's method (modified). The second gives a truth table from any type of Boolean expression.
A set of miscellaneous electrical engineering applications, for things such as current divider rule, voltage divider rule, parallel resistance, ohm's law, balanced bridges, mesh analysis, nodal analysis, power equations, and more.
Program that calculates the resistors of a automatic polarization circuit, given some parameters of a transistor and calculates also the three basic amplifiers with a TBJ to small signals. Without documentation, yet.
This program calculates all the voltages, currents and power flow of an electrical high voltage net in fault conditions, in any electrical type of fault or combined fault.
Software to determine the feedback gain in a multi feedback systems by "Método de DESVANECIMIENTO". It's designed in User RPL and helpfull for students in Electrónica II at Universidad Central de Venezuela in Caracas, Venezuela.
This is an FFT program taken from Oppenheim and Schafer's Digital Signal Processing. Also included is a neat little program PLFFT which plots the magnitudes the results of the FFT program.
A set of programs for digital signal processing. Included are: Discrete Fourier Transform (also does inverse), Fast Fourier Transform, Inverse Fast Fourier Transform, Fourier Transform (selects FFT or DFT depending on size), Inverse Fourier Transform (selects FFT or DFT depending on size), Periodic Convolution, Aperiodic Convolution, Two Dimensional Fourier Transform, Inverse Two Dimensional Fourier Transform, and Axis Shifter for use with Two Dimensional Fourier Transforms.
FUMO contains functions allowing digital signal processing. It allows sampling typical or user defined signals, applying window functions, applying FFT (or DFT) transform, convolve, zero-pad, and get frequency, phase or group delay responses. Documentation also in Polish.
An extended RF network design and analysis tool, written for RF education purposes at the Fachhochschule für Technik in Mannheim, Germany, Department of Telecommunications Engineering, and intended for use in education and ham radio applications.
Supports 13 ideal components (resistors, conductors, capacitors, inductors, current sources, voltage sources, short circuits, op amps, transformers, and more), and performs DC and AC (given a frequency) analyses.
An AC spice type circuit simulator. The program is limited to AC analysis, but by selecting a very low frequency (not 0) it can give a reasonable DC approximation.
Given parameters of a filter, H, wc and Q, calculates an inverting active filter using an ideal OPAMP. Can draw the circuit. Document in English but menus in Spanish.
Calculates third order intermodulation products in frequency processing devices. It was developed with satellite communications in mind, for the purpose of identifying overdriven earth stations, based on observed intermodulation products in a satellite transponder. The program has general application where 3rd order intermodulation products need to be calculated.
This program allows you to calculate an impedance value, by giving the capacity, the self inductance, and the resistance of an AC circuit. For both parallel and serial circuits.
This program returns all the parameters (scalars and phasors) of the Induction Machine equivalent circuit, given the data obtained from the No-Load and Blocked Rotor Tests. A explanation figure is included in this package. This program can be used to obtain the transformer parameters (No-Load == Open Circuit Test // Blocked Rotor == Short-Circuit Test). Recommended for Electric Machinery and equivalent courses.
This is a program (library for the 49G and directory for the 48) that calculates hydraulic (by the modified Hunter method) and electric installations for residences and buildings. It's useful for architects, engineers and constructors, particularly in Latin America.
This is a library which evaluates the Jacobian, to help people with the Newton-Raphson Method, and derive N equations below N variables, useful in electrical engineering.
LIMP calculates the positive and zero sequence impedances of bare three phase lines which have one conductor per phase and up to two guard or neutral conductors.
Program that calculates the capacitive reactance matrix of a tri-phase Line in Power Systems. It's very important to people who study the basics of Power Systems in Electrical Engineering.
Allows the design of digital filters (IIR lowpass and highpass, FIR, differentiator, Hilbert transformer) and to plot the frequency domain (magnitude and phase) and time domain (impulse and step) responses of the designed filter or any other digital transfer function.
Interfaces via the serial interface with the METEX 3650CR digital multimeter. Displays METEX data as a numeric value, as a line graphic, or as an analogue instrument. Has automatic measuring range detection, supports continuous or time-delayed readings, logs measured values to the HP thermal printer via the IR interface, and stores measured values.
Given filter parameters, H, wc and Q, calculates some non inverting active filters, including some biquad forms. Can draw the circuit. Documentation in English and menus in Spanish.
Paral will find all combinations of parallel 1% resistors to obtain the desired value within a given accuracy. This is useful in case you don't have the value you need on hand, but also because the exact value you want may not be a standard off-the-shelf value.
System RPL program for performing calculations on Phase Shift Oscillator circuits, including total voltage, frequency, feedback resistor value, and more.
Simple program for calculating digital control matrices, as described in the book Franklin, Powell, Workman, DIGITAL CONTROL OF DYNAMIC SYSTEMS 2nd ed.
Calculate Electrical power flow with Newton-Raphson or Gauss-Seidel way. Solve non-linear equation system. Calculate Economica Dispatch with loss, and Heat rate curves.
This program is very useful for those who work with electronics. It converts color codes of resistors into their numerical value and vice versa. It's very easy to use.
Solves all kinds of electrical uncontrolled rectifiers. Enter the electrical parameters of the rectifier (source voltage, load voltage, load resistance, internal resistance, and resistance of one diode), and the V1 V2 and V3 curves will be plotted, as well as the load voltage line.
Given a resistance, gives the closest standard resistor voltage (supports, E12, E24, and E96). Also calculates standard value components (using the above programs) for a second order Sallen-Key low-pass filter.
Lets you choose the stripe colors of a resistor and it will then display its value. It will also let you enter the numeric value of a resistor and will display the stripes the resistor should have.
RLC is a two storage element series RLC circuit solver/plotter. It works in a laboratory environment that has the need to build or use a variety of high energy pulse generators.
Provides satellite communications link budgeting, antenna siting, and sun interference calculations for geosynchronous satellites. Generates horizon profile drawings and predicted spectrum analyzer traces. Calculates antenna parameters, and bandwidth allocations. Provides for direct conversion and calculation of decibels and carrier to noise ratios. Compatible with 48GX, 48G+, 49G, 49g+, 48gII, and 50g.
A program to determine the transmit gain, receive gain, and figure of merit (G/T) of a parabolic satellite communications antenna. It uses antenna diameter, efficiency, transmit frequency, receive frequency, and receive system noise temperature as inputs. Although developed for satellite communications, it should work with any parabolic antenna system.
The SCpower program was written in an HP48G+; it also runs on the HP49G. It calculates three phase and one phase to ground (1LG) short circuit currents at faulted buses as well as fault currents that circulate through the power network. It uses 100 MVA as base power. It does not yet calculate LL or 2LG faults, nor does it take into account fault resistance. It creates and manipulates the positive and zero sequence impedance matrices of the power system.
With this program you can calculate the input resistance and output resistance, voltage gain for the four basic configuration of the BJT transistor: CE, CC, CB, DE.
Determines the DC operating point of a circuit with inductors shorted and capacitors opened for BJT transistors, diodes, and op-amps using the Ebers and Moll non-linear equations model. Requires SolveSys.
Resistor color code program with just two commands: COR and VALOR. With one, enter the colors and it will tell you the resistance. With the other, enter the resistance and it will tell you the colors.
Program for use in control systems. It includes: Simulation, Predetermined Inputs, Bode Plot (Magnitude and Phase), Root Locus, Nyquist Plot, Nichols Plot. All in an easy to use package with graphical menus, like the built-in apps.
A very useful program to solve elementary transmission lines problems. Starting from a given load impedance, and some other parameters, it calculates the input impedance. This program works with both short circuits and open circuits.
Aimed at two-port network analysis. Calculates gain and impedances when a two-port is connected
to a source with internal resistance Rs and a load resistance Rl. Y-, Z-, h- and g-parameters are supported, and converts between Z-, Y-, h- and g-parameters.
Contains functions useful for calculations related to two-port networks. Current version is first standalone. Includes both Polish and English documentation. Now requires free registration.
This library handles any manipulations with two-ports. It works with filters (and real values), but also with algebraic two-ports. Library needs to be manually attached with :0:1493 ATTACH.
This program can be used to choose the best resistor values for a simple two resistor voltage divider. Combinations of standard E12 and E24 resistors are supported.