Design Ideas editor Charles H. Small introduces EDN's latest engineer-submitted circuit designs, providing links to related articles from our archives, design resources elsewhere on the Web, and just-plain-fun stuff.
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Blog
Thursday, July 19, 2007
Design Ideas test setups don't rely on data sheets
Jul 19 2007 12:00AM | Permalink |Comments (1) |
Armed with the circuit in "Analyzer tests reverse-recovery behavior of diodes," you can obtain consistant reverse-recovery data on devices such as diodes. Having your own test setup for such tests means you don't have to use possibly inconsistant data sheets from different manufacturers.
An amplifier's PSRR (power supply-rejection ratio) is among the most commonly characterized parameters when analyzing the performance of an op amp. Another test setup, in "Perform PSRR testing with analyzers having no dc-bias ports," allows you to use an analyzer that has no dc-bias port but that can characterize frequency response as low as 10 or even 1 Hz.
Lastly, "High-power LED drivers require no external switches" presents an array of five high-current LED drivers that operate from a variety of input voltages. As the latest generation of new LEDs achieves higher levels of power and efficiency, use of these devices extends to new areas, such as flashlights and vehicular applications.
Reader Comments
at 7/19/2007 12:01:52 PM, bill said:
Reverse-recovery diode test fixture: C10 polarity is reversed.
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