Amplifier requires no dc bias

Amplifier requires no dc bias

john guy @ edn.com writes:

Intrinsically capacitive transducers and other high-impedance signal sources usually require ac coupling and a buffer amplifier to condition the signal for further processing. Buffers take many forms, but most of them compromise signal quality through the use of external resistors that provide a dc path for the input bias current. Recent improvements in op-amp technology allow ac-coupled inputs without the need for bias resistors.

Amplifier requires no dc bias – [Link]

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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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Audioguru

The pin numbers shown in the opamp are backwards. Pin 2 is supposed to be (-) and pin 3 is supposed to be (+) like on every other dual opamp.

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