Jack Crossfire's Blog – December 2011 Archive (3)

Spin tests



Made a program that spun Marcy 1 in a variety of throttle & cyclic settings, to measure the effect of cyclic on period. …

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Added by Jack Crossfire on December 26, 2011 at 2:00am — 2 Comments

Magnetometer again







It turned out to be an 8975 instead of an 8973.  By some contact lens malfunction or erroneus Goog search, we thought it was an 8973 all year.   The 8975 has a completely different pinout than the 8973.  The power pins were shifted around.  An…

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Added by Jack Crossfire on December 18, 2011 at 3:30am — 1 Comment

Double cascaded RC filters

Spent a lot of time trying to low noise overclock audio preamps.  The main factor affecting you as you get an extremely high gain transducer into subterranian levels of noise is the power supply.  Every consumer gadget encounters some humming noise before it encounters thermal noise.  Even a DSLR has banding noise from a power supply ripple.…

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Added by Jack Crossfire on December 8, 2011 at 2:55am — 5 Comments

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