PCB Design Process, SPICE software, PCB Layout, Schematic Capture, Circuit Designers

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TI Tina circuit simulator software

TI Tina as is described on the Texas Instruments website is a free analog simulator . TI TINA SPICE-Based Analog Simulation Program is designed and distributed by Desig-Soft and Texas Instruments and is available for download in a free version, but you can update it to a paid version which include more features and libraries .
The interface of the TINA-TI SPICE-Based Analog Simulation Program is very nice and easy to use . You can draw a circuit in few minutes , without to require some special documenation about this software .

ExpressPCB CAD software

ExpressPCB is a free CAD software , specially designed to help us to create printed circuit board .
A big plus for ExpressPCB is that this software is free , but after you will test it you will see that ExpressPCB has many minuses .
Evan ExpressPCB is not so user friendly ( we will explain bellow why ) , this software is used by many engineers . If you install ExpressPCB you will see that the software is composed by two subprograms : ExpressPCB and ExpressSCH.
expresssch circuit design software

FreePCB layout editor

FreePCB is a free, open-source PCB layout editor for Windows .