Stanford
EE 133 -
Lecture Notes
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idνdtodνdtGenerally..we..want:odνdt≥idνdtAbout “Peak Detection” and WaveformsWhat we DON’T want--Clippingenvelopediagonalclipping tt’=0Ve(t)Condition for Optimum RCReqVo(t)RCcωTmωTA∆ν“refresh” needed fromnext phase pulse, via diode1mω=RC⋅112m −1About the Equation for “optimum”…vi=Vi(1+mcosωmt)vo= Ve−tTRCVTRCe−tTRC≥ Vimωmsinωmtequating_vi=vo_(at_some_t)1+ mcosωmtTRC≥mωmsinωmtAnd the answer is…after_some_"trig"_manipulations...1−m2( )12m≥ ωmTRCwhere_TRC=RC _ then :C≤1−m2( )12m1ωmR=1m2−1ωmRThe KEY equation for C (in terms of:m,ωm
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