Low Cost/Voltage 3W Class-D Stereo Audio Amplifier for Portable Gadgets
Audio

Low Cost/Voltage 3W Class-D Stereo Audio Amplifier for Portable Gadgets

This low cost low voltage 3W class-D stereo amplifier is based on PAM8403 IC, The PAM8403 is a 3W, class-D audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction. The new filter-less architecture allows the device to drive the speaker directly,...

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Hi-Fi Stereo Headphone Amplifier using LME49600
Audio

Hi-Fi Stereo Headphone Amplifier using LME49600

This project is the ideal solution for high output, high performance high fidelity stereo head phone amplifier. The project consists of Op-Amp LME498720 and LME49600 as output driver. The LME49600 is able to drive 32Ω headphones to a dissipation of greater than 500mW at 0.00003% THD+N...

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Design of a Korg Nutube Amplifier
Audio

Design of a Korg Nutube Amplifier

Karlwoodward @ www.rs-online.com/designspark is in the process of designing a “guitar pedal” for amplification and distortion using the Korg Nutube we featured earlier. The Part 1 of a series of articles goes through the basic aspects of tubes and valves, the pros and cons on using...

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Teardown of a TDA7375 audio amplifier IC
IC

Teardown of a TDA7375 audio amplifier IC

A teardown of a TDA7375 audio amplifier IC from Electronupdate: The TDA7375 audio power amplifier. Another example of a long-lived integrated circuit.  1st introduced in 1998… looks like it’s still being made. Teardown of a TDA7375 audio amplifier IC -...

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Simple Pressure Sensor Amplifier & Over Pressure Switch
Sensor

Simple Pressure Sensor Amplifier & Over Pressure Switch

The pressure sensor amplifier built using LM358 op-amp and MPXM2051GS pressure sensor from NXP semiconductor.  The circuit provides 4V output for full scale pressure input 0-7.5PSI.  One op-amp is used as amplifier and 2nd op-amp is used as comparator to provide an output at set...

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Amplifier requires no dc bias
Miscellaneous

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...

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Redefining a new state-of-the-art in microampere current-sense amplifiers
Test/Measurements

Redefining a new state-of-the-art in microampere current-sense amplifiers

Silicon Lab’s TS1100 and TS1101 current sense amplifier’s features discussed in this app note. Sensing and controlling supply current flow are a fundamental requirement in most all electronic systems from battery-operated, portable equipment to mobile or fixed-platform power...

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LTC3623 – Switching regulator doubles as Class-D audio amplifier
Audio

LTC3623 – Switching regulator doubles as Class-D audio amplifier

Clemens Valens @ elektormagazine.com discuss about LTC3623 switching regulator which can be used as Class-D Audio Amplifier. Sure thing, Elektor has published several designs of adjustable power supplies based on switching regulators, so we know that doing this properly in a...

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