A cascode configuration reduces reference modulation error in a 4-20 mA current mirror, improving active impedance by orders of magnitude.

Stacks of worksheets sit atop desks and tables in Chanea Bond's Fort Worth classroom. Her students all have their own school-issued laptops, but Bond has swapped computers for paper — lots of paper.

If you thought your test-taking days ended when you left school, think again. Recent research shows that about 76% of organizations with more than 100 employees rely on assessment tools such as ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Michael Boyle is an experienced financial ...