My Electronics calculators:
I make sometimes excell based electronics calculators, to make my work easyer.You can download them here.
In the webpage http://circuitcalculator.com/wordpress you can find more calculators, from other people.
Mostly the file links work only with Internet Explorer !
(In reverse chronological order)
PCB Material Library 2007-2016 (constantly updated)
A lsit of available prepreg and core materials with all important properties.
With this tool, you can determine PCB design rules or you can check if the already designed system
meets the timing requirements, or not. Timing analysis is very recommended for high-speed digital systems.
An earlier version is available here.
This is a calculation-sheet file to be used in the free program the Smath Studio, to calculate power dissipation
in the indusctor and the power switches in a DC/DC converter. The program is available here.
If you want to get an accurate frequency-dependent characteristic impedance of a transmission line,
Then you can use a general purpose 2D field solver, like the FEMM to simulate for RLGC parameters.
If you have them, you still need to get the impedance, so you can put them together here.
This calculator also calculates frequency dependent dielectric constant, and the G parameter from the others.
Most of the PCB trace impedance calculators dont take the signal frequency into account.
With this calculator, you can fill this gap, by providing frequency-pre-compensated dielectric constant to them.
These are QUCS (free) simulator schematics template files. It can help you in doing macromodeling, simulation
and design of system-level power distribution networks for CPU/FPGA core and IO power rails.
Additional tools needed for creating models to be inserted into the template:
QUCS circuit simulator with S-parameter support (freeware, open source)
SonnetLite PCB 3D EM Simulator (freeware)
TNT MMTL trace impedance field solver (freeware, with registration)
Updated QUCS templates:
This new version allows PDN impedance simulation and decoupling network design using measured VRM model and simulated PCB power plane model.
This template allows „channel simulation” using QUCS, for high-speed serial multi-gig SERDES channels in decomposition analysis, by chaining S-parameter models and lossy Tlines together.
With this calculator, you can make an estimation an the PCB interconnect loss budget for your high-speed
serial interconnections, like PCI-express, or SATA.
With this, you can match trace lengths whose are on different layers. However, its recommended to put all
Your signals what you have to match, ont same structure layers.
With this tool, you can calculate trace lengths, adjustments for memory-interface PCB-design
With this tool, you can try how your controlled impedance traces will look like on a selected PCB stackup.
If you work with high speed PCB design, with this tool you can calculate or compensate the effect of the
Permittivity variation over frequency.
With this tool, you can make a timing analysis for an SDRAM memory and embedded processor based system.