ELECTRONICS HOBBYIST
Circuit and Schematic Archive Sites

• Freeware Indexes/Archives:
  • SysInternals LINK FIXED: Windows admin utilites (free)
  • Web EE
  • G4FGQ memorial rf freeware
  • Terry P. Schem/PCB sw links
  • freecad.com CAD/CAE freeware archive
  • Switchercad, filtercad from Lin. Technology Inc.
  • electronics-tutorials.com CAD downloads
  • Scilab math/sci, FFT etc.
  • Other free EM code, and more
  • Finite Element Resources
  • Greg, rf cascade
• PCB freeware
  • Bay Area Circuits PCB creator, fab service
  • Eagle Lite
  • ExpressPCB buy PCBs
  • PCB Creator
  • GEDA pcb
  • PCB Artist Adv. Circ.
  • pad2pad, buy PCBs
  • pcb123 buy pcbs
  • WinQcad
  • Merlin PCB
  • Cadint PCB
• Circuit simulators
  • Orcad PSPICE 9.1 Student vers
  • LTspice Lin. Tech & tutorials
  • 5-spice shareware
  • Circuit Const Kit (electricity edu)
  • Falstad's DIY Circuit Applet (electricity edu)
  • ngSpice open source
  • TINA design suite demo version
  • CircuitLogix Student vers 90-day
  • Digital Works simulator (shareware)
• Designworks Lite (schematics)
• Protel free trial
• NuHertz filter design
• Free Student Version of the Quickfield magnetic/electrostatic/thermal simulator
• XMDS math simulator
• FEMM finite element magnetics
• Sonnet Lite for PCB rf reflections
• ACD/Chemsketch molecular modeling (free to schools)
• 3D e-field cad
• CFD fluid dynamics

FPGA, VHDL stuff

• VHDL FAQ
• Atmel AVR programming sw
• FPGA devel, webpak ISE (Xilinx)
• COMP.LANG.VHDL
• VHDL cookbook (pdf, via FTP)