HEATKEYS

Electronics ++

Ekswai provides articles and calculator tools for electrical engineering

Schematic diagrams, circuits & projects for guitar effects pedals with vacuum tubes and transistor solid state electronics. FREE downloads of schematics such as TS-9, Fuzz Face and other classic rock devices. Build your own fuzz box!

Analog Devices, Analog, Semiconductors, Digital Signal Processing, World leader in high performance signal processing solutions. Offers ICs for data converters, amplifiers, DSP, RF & communications, power and thermal management, supervisory and i...

NGSPICE Online simulator, Free SPICE simulation

Online tools and calculators for engineers

This site offers many tutorials on electronics, including resistors, capacitors, inductors, voltage regulators, and many different ICs.

Learn and practice Aptitude questions and answers with explanation for interview, competitive examination and entrance test.

Tools and links for RF/analog circuit design and analysis.

TINA Design Suite is a powerful circuit simulation package for analyzing, designing, and real time testing of analog, digital, VHDL, MCU, SMPS, RF, communication, optoelectronic and mixed electronic circuits and their PCB layouts.

Texas Instruments (TI) is a global analog and digital semiconductor IC design and manufacturing company.