Improved isolation amplifier transmits dc or low-frequency analog signal by use of digital pulses. Relatively imprecise digital pulses convey analog signal with relatively high precision. Amplifier implements sigma-delta modulation scheme. Circuit used wherever conventional amplifier needed. Includes medical instrumentation, switching-type power supplies, and other applications in which input voltages must be measured in presence of large common-mode voltages.
Isolation Amplifier Based On Sigma-Delta Modulation
NASA Tech Briefs ; 18 , 7
1994-07-01
Miscellaneous
No indication
English
Isolation Amplifier Based on Sigma-Delta Modulation
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