Circuit Design Software, Electrical Engineering Software, mostly FREE

Greg's DOWNLOAD page.
Category: Circuit Design

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Program Name: Punequal
Function: Unequal Resistive Power Divider
License type: Freeware
Description: Designs a resistive power divider for unequal power split.
Link location: Local
Design an Unequal Power Divider online
Browse the program's README file first
Electrical Engineering Software HOME
Alternatively, check out Paul Khanna's online version at http://www.hfoscillators.com/Web_Utilities/UnequalResPoDiv.html
See also microwaves101 for discussion of Unequal Resistive Power Dividers!
and the March 2007 issue of High Frequency Electronics

Program Name: Stub
Function: Microstrip Radial Stub calculation
License type: Freeware
Description: Design a printed broad band bypass using a Microstrip Radial Stub.
Link location: Local
Design a radial stub online


Program Name: Tcomp
Function: Temperature Compensation
License type: Freeware
Description: Designs a thermistor temp comp network for a three point fit. .
Link location: Local
DOWNLOAD
DOWNLOAD the old DOS version
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: SRD
Function: Step Recovery Diode Multiplier Design
License type: Freeware
Description: Calculates component values for an SRD frequency multiplier based on HP Application Note #920.
Link location: Local
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: RF Sim 99
Function: Liner Circuit Simulator
License type: Freeware
Description: Schematic Capture, Graphic Output, Quick and Easy
Link location: Local
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME



Program Name: Resistor-Switch Networks for Audio Volume Control
Function: Digital attenuator / volume control design
License type: Freeware
Description: Java program to design a digital volume control using switched resistors.
Link location: External
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: HP Appcad
Function: Toolbox of utilities, does stripline and microstrip transmission lines.
License type: Freeware
Description: Microstrip analysis, Impedance matching, couplers,
cascaded NF and Gain, more. Doesn't like Win98 dos shell. Works under Win2000, or old fassioned DOS.
Link location: Local
DOWNLOAD DOS version
Browse the program's README file first
download the feature-poor Windows version
Electrical Engineering Software HOME


Program Name: MWI
Function: Microstrip and Stripline transmission line and coupler design
License type: Freeware
Description: This great little calculator program from Rogers Corp will:
calculate Zo (characteristic impedance) of Microstrip, stripline, and Offset Stripline (Asymetric Stripline)
Design couplers in stripline.
Link location: External
DOWNLOAD from Rogers
Electrical Engineering Software HOME


Program Name: WAIRL
Function: air inductor design software
License type: Freeware
Description: Accurate design of small single layer air-wound inductors for microwave filters can be done using this free software. This is similar to the PCAIRL program described in RF design magazine, November 1994, page 52.
Link location: Local
DOWNLOAD NOW
Al Klappenberger's home page (scroll down)
Electrical Engineering Software HOME

Antique Software:
Software below this line is old and probably won't run in 64 bit MS Windows.
It's listed here because:
1. You may be able to use it in a compatibility mode.
2. Some programs have source code provided, which you may find useful.


Program Name: Coil [ANTIQUE]
Function: RF Inductor design
License type: Freeware
Description: Calculate inductance, Q of air wound inductors.
Link location: Local
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME


Program Name: Filter 2.0 [ANTIQUE]
Function: Active Filter Design.
License type: Shareware (but I have not been able to contact the author to register)
Description: Designs Op Amp Active filters.
Link location: Local
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME



Program Name: PLL [ANTIQUE]
Function: Phase Lock Loop Design
License type: Freeware
Link location: Local
Description:
Program from National Semiconductor (now TI) designs a second or third order Phase Lock Loop. Nice windows presentation. A handy program from a great company. There is no readme file or online help, but if you understand phase lock loops, you will have no problem using the program.
DOWNLOAD NOW
Visit National
Electrical Engineering Software HOME


Program Name: Gamma2Z [ANTIQUE]
Function: Impedance calculation
License type: Freeware
Description: Calculates Impedance from complex reflection coefficient.
Link location: Local
DOWNLOAD NOW
Browse the program's README file first
Electrical Engineering Software HOME