Mini-MosFet Audio Amplifier 30W by IRF530-IRF9530

Tuesday, November 6th, 2007
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This project was a sort of challenge: designing an audio amplifier capable of delivering a decent output power with a minimum parts count, without sacrificing quality. (View Circuit)
The Power Amplifier section employs only three transistors and a handful of resistors and capacitors in a shunt feedback configuration but can deliver more than 18W into 8 [...]

Power amplifier 65W with HEXFET IRF540, IRF9540

Thursday, September 6th, 2007
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A medium power amplifier that is characterized by a lot of good sound quality, but simultaneously is very simple in the construction. Him uses, enough time in my active loudspeakers. In his output stage exist the very good FET transistors, technology HEXFET, transistor which are controlled by voltage and no by current as [...]

Power Amplifier 45W with HEXFET IRF9540,IRF540

Thursday, September 6th, 2007
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A ideal solution for the make a good, low cost power amplifier. It�s a ideal solution for the creation a system of home cinema. The preamplifier and the driver support in a operational amplifier [IC1]. The voltage fall in resistors R5 and TR2/R6, drive the output FET’s gates and is proportional with the input signal [...]