* Differential Amplifier [#xa66c2ee]
** Circuit diagram [#je2e27e0]
#ref(Differential Amplifier.png,,80%);

** Implementation [#x679b45a]
- Differential Amplifier which multiply the differential signal by factor of 360
- Designed to be used for Geophone preamps, but eventually not used because it's too noisy 

** Design [#d61478c5]
- designed by S Takano in Sep. 2018 based on LIGO's Geophpne preamp



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