THE MAGAZINE FOR COMPUTER APPLICATIONS
Circuit Cellar Online offers articles illustrating creative solutions
and unique applications through complete projects, practical
tutorials, and useful design techniques.

WHAT'S YOUR ENGINEERING QUOTIENT?

Problem 5—Surface mount resistors and capacitors often come in "chip" packages designated 1210, 1206, 0805 etc. What do the number designations indicate about the physical size of the component. Explain exactly what the number designations mean.

ANSWER

Problem 6—A "9V" NiCd battery is rated at 120mAH at 8.4V nominal voltage. A 2/3 "C" cell is rated at 1000mAH at 1.2V nominal voltage. Compute the amount of energy stored in each battery (in Joules). Which battery stores more energy?

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