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Amplifier Circuits:  Low Noise Circuits

Composite Amplifier Improves Noise : 08/04/94 EDN-Design Ideas 

Low Noise Amplifier for Phase Noise Measurements: features less input noise than a 50 ohmresistor. 

Low Noise Balanced Microphone Preamp: very low noise, close to the theoretical minimum, high hum rejection and variable gain with a single rotary pot, similar to that used in many professional grade mixing desks

Low Noise Microphone Preamplifier:

Low Noise Variable Gain Amplifier:


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