- Resistor colour code calculator
- LED series resistor calculator
- Series / parallel resistor calculator
- Capacitance unit converter
- Charge / Energy calculator
- Capacitor code calculator
- Series / parallel capacitor calculator
- Convert colour code to inductance
- Convert inductance to colour code
- Ohm Law calculator
- Potential Divider calculator
- Wheatstone Bridge calculator
- Power (wattage) calculator
- Reactance calculator
- Technical Data
- Beginners Guide
Links - Products & Other Equipment
1 Stop LED Shop - Australian supplier of LEDs, drivers, lamps and related products & components.
AtBatt.com - Online retailer of batteries for laptops, digital cameras, camcorders etc.
Batteryless Bicycle Flashing Safety Light System - LED bicycle lighting system powered by the rotating wheels without making it noticeably harder to pedal. Web site includes online ordering and fitting instructions.
Blazepoint - Design & manufacture of rugged computers, printers & displays.
Cables and Stuff - UK supplier of computer cables, cable management systems and network equipment inclusing fibre patch cables & equipment.
Comms Express - UK online supplier of networking and structured cabling products and computer accessories.
Digital Music Museum - guide to MP3 players, including information, reviews and latest news.
Fiber Optic Products Inc - American company selling a wide range of fibre optic products, mostly for decorative lighting.
Jindal's Electricals - Manufacturers of voltage controllers, servo stabilisers, transformers & other equipment.
LaserPointers.co.uk - Site selling laser pointers for presentations and other uses.
RadioScan - Suppliers of hand-held radio scanners. Site also has general information on scanners and links to software downloads.
Sola/Hevi-Duty - Specialists in uninterruptible power supplies, power conditioners and surge suppression.
Sure Power - American supplier of uninterruptible power supplies, batteries and related services.
Test Buyer - US buyer's guide to test & measurement equipment. Includes links to technical datasheets for curent and obselete equipment, new and used prices and a parametric search facility.