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Using HEXFETs in High Fidelity Audio
https://sound-au.com/articles/hexfet.htm
HEXFETs have a nonlinear transfer curve up to about an amp or two, depending on the device(s) used. In a class AB amplifier, this characteristic is the cause for a majority of the THD. When driven with enough current, the device will follow the 'new' linear curve, since it is balancing out the nonlinear gate capacitance.
HEXFET-Based Medium Power Amplifier with 65W Output
https://www.eeweb.com/hexfet-based-medium-power-amplifier-with-65w-output/
HEXFET-Based Medium Power Amplifier with 65W Output. Posted Friday, January 27, 2012. The objective of the circuit is to create a medium power amplifier based on the functionality of a HEXFET to produce a good quality of sound while providing 65W of power output. BC550 – an NPN general purpose transistor with low current and low voltage used for …
HexFet Amp Based on Philips AH578 and LMK | diyAudio
https://www.diyaudio.com/community/threads/hexfet-amp-based-on-philips-ah578-and-lmk.373773/
HexFet Amp Based on Philips AH578 and LMK. …. Within last 2 years,I built several amps based on the LMK (Lomakin and Parshin) design, described in this thread. I also built amp based on Philips AH578, which has this advantage (?) that it has symmetrical VAS (push-pull), and higher slew rate.
HEXFET AMPLIFIER UPGRADE - Hobbielektronika.hu
https://www.hobbielektronika.hu/forum/getfile.php?id=212014
he Medium Power HEXFET amplifier published in this magazine in Decem-ber 1993 has one small drawback: it deliv-ers ‘only’ 60 W into 8Ω(or 120 W into 4 Ω). Otherwise, it is a first class amplifier that provides excellent music reproduction, which is evidenced not so much by mea-surement as by audition. To some listeners,
400W RMS Hexfet MOSFET Amp - ePanorama
https://www.epanorama.net/sff/Audio/Circuits/Power_amplifiers-linear/400W%20RMS%20Hexfet%20Mosfet%20Amp.pdf
The symmetrical amplifier is an update of one of my designs, which appeared in the Australian electronics magazine Silicon Chip in June 1994. The main changes made in this design was the addition of a clipping detector circuit and bias circuit modifications for the use of International Rectifier HEXFET MOSFET’s.
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