Neutrino Extreme Edition

This project is addressed to those in need of a high fidelity amplifier for a small or medium space.
In fact it’s simple to build, very compact (78 x 88 mm) and with enough power.
Sound quality can be a very heated and subjective debate.

Here’s a glimpse into the PCBs, top:
Extreme Top

This unique IC, LME49811, provides a quick and easy way to manufacture an ultra high-fidelity amplifier solution, with the piece-of-mind obtained from a fully optimized, stable design.
Technical characteristics are based on the IC performance.
The most important feature is a class A internal implementation.
About THD nothing to say because is very very low.
Even this low SR characteristic can be easily increased with a driver stage.
In output stage we found complementary ThermalTrak transistors whose main benefit is ...

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SMPS800/1kW

The power source is a full-bridge power converter based on  a ETD49 core.

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*The pulse modulator control circuit is provided by SG3525 and NCP5181 power mosfet drivers without power factor correction.

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The SMPS800/1KW also features an advanced over-current protection which limits the output current  in case of temporary overload.

When the overload condition occurs for a longer time, the supply will enter hiccup mode until the overload disappears.

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The protection is set at 9 Amps. The voltage drops from 120Vcc to 113Vcc in a full load.

Large capacitors low ESR from Nichicon are used in the secondary stage

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This feature combined with large primary electrolytic buffer capacitors leads to the capability of delivering high dynamic headroom power to the connected amplifier.
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The sound will ne...

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