Audio Power Amplifier MOSFET 400W

Sunday, September 24th, 2017 - Audio

400W power amplifier using 8 units IRFP448 MOSFET as a power amplifier. Power amplifier circuit is included in the final amplifier OCL type on each side of the audio signal using a single type of power transistor. Driver for power MOSFET transistor D401 used on each side of the signal amplifier. Power amplifier circuit is a power amplifier OCL with symmetrical working voltage 70-80 volts. The circuit is a 400W power amplifier OCL which will issue a spike in the signal at the output point when first turned on, so it requires a delay circuit on the output lines before being connected to the speaker (speaker protector).

The circuit MOSFET 400W Audio Power Amplifier

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Before the circuit MOSFET 400W Audio Power Amplifier is used to power mosfet bias voltage must be setup in advance by measuring the output point to the ground with a volt meter and should be 0 volts DC. If the point of the output MOSFET Audio Power Amplifier 400W not 0 volts, VR1 1KOhm we are setting up the output voltage is 0 Volt.

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