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Homebrew Spectrum Analyzer 2: Control Board Circuit Discussion

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Published on May 11, 2014

In this video, I am discussing the circuitry of my homebrew spectrum analyzer project which is based on Scotty's Spectrum Analyzer:
http://scottyspectrumanalyzer.com/

In particular, I am discussing how the parallel port is multiplexed using D-latches, how reverse polarity protection is implemented and how the charge pump is implemented. Dave Jones' video on voltage doubles can be found here:

http://www.eevblog.com/2013/05/25/eev...

The datasheet of the charge pump chip is here:

http://ww1.microchip.com/downloads/en...

The datasheet of the D-latch is here:

http://www.ti.com/lit/ds/symlink/sn74...

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