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The implanted amplifier circuit

2015-01-03 03:36  
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The implanted amplifier circuit
The amplifier is used in the emitter which is implanted in human bodies, so the LEV of the brain and heart can be monitored. The circuit works when the voltage is lower than 1.35V. The voltage gain is 2000, when the source impedance is 10MΩ, the equivalent input noise is only 10*10 -6Vp-p. The current of Trl is too low, so the band width is only 5kHz or so, but it is enough for biological use.