IRF44 Mosfet based on 100 Watt Inverter Circuit

IRF44 Mosfet based on 100 Watt Inverter Circuit

This inverter circuit can offer a really stable 230V Output Voltage. Frequency of operation is decided by a VR1 and is generally set to 60 Hz. varied “off the shelf” transformers can be used. Or Custom wind your own for best results. additional MosFets can be paralleled for higher power. its recommended to own a “Fuse” within the Power Line and to perpetually have a “Load connected”, while power is being applied. The Fuse ought to be10 Amps per one hundred watts of output. the ability leads must be serious enough wire to handle this High Current Draw.

Absolute Maximum Ratings of IRF44 Mosfet

• Continuous Drain Current (25°C, 10V) = 49 A
• Continuous Drain Current ( 100°C, 10V) = 35 A
• Pulsed Drain Current = 160 A
• Power Dissipation = 94 W
• Gate-to-Source Voltage = ± 20 V
• Avalanche Current = 25 A
• Operating Junction = -55 to + 175

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High Voltage 3 Watt Audio Power Amplifier

The LM4954 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 2.4 Watts of continuous average power to an 8 BTL load with less than 1% THD+N from a 7V_DC power supply. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal number of external components. The LM4954 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for lower-power portable applications where minimal space and power consumption are primary requirements.

High Voltage 3 Watt Audio Power Amplifier Circuit Diagram

The LM4954 features a low-power consumption global shutdown mode which is achieved by driving the shutdown pin with logic low. Additionally, the LM4954 features an internal thermal shutdown protection mechanism.

The LM4954 contains advanced pop & click circuitry which eliminates noises that would otherwise occur during turn-on and turn-off transitions.

The LM4954 is unity-gain stable and can be configured by external gain-setting resistors.

Key Specification:

Wide Power Supply Voltage Range	2.7 <= VDD <= 9V
Output Power: VDD = 7V, 1% THD+N	2.4W (typ)
Quiescent power supply current	3mA (typ)
PSRR: VDD = 5V and 3V at 217Hz	80dB (typ)
Shutdown power supply current	0.01µA (typ)

Features:

No output coupling capacitors, snubber networks or bootstrap capacitors required

Unity gain stable

Externally configurable gain

Ultra low current active low shutdown mode

BTL output can drive capacitive loads up to 100pF

"Click and pop" suppression circuitry

2.7V - 9.0V operation

Available in space-saving microSMD package

Applications

Mobile Phones

PDAs

Source: http://www.ecircuitslab.com/2011/06/high-voltage-3-watt-audio-power.html

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