Applications for Bandpass Filters

Thread Starter

ugaexploder

Joined Nov 10, 2008
1
hello guys, first-time poster here...i am doing a writing assignment for school...i was wondering what kind of applications bandpass filters are used for. off the top of my head the first two things that come to mind are radios and televisions...could some of you guys help me come up with some more applications...thanks
 

KL7AJ

Joined Nov 4, 2008
2,229
Bandpass filters are used in all kinds of instrumentation, as well, in Seismology, Sonar, even medical applications...for example electrocardiograms, EEGs and such. They are also widely used in optics, such as with lasers, LIDARS, etc. Color filtering is actually a bandpass function. Don't limit your thinking to strictly electronics! There are mechanical equivalents of bandpass filters, as well. In fact a quartz crystal is both a mechanical and an electrical device.

eric
 

SgtWookie

Joined Jul 17, 2007
22,230
Even your telephone service uses bandpass filters; the audio side is roughly 250Hz-5kHz.
If you get DSL, technicians install bandpass filters to split the digital and audio signals.
 
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