45 Watt Class-B Audio Power Amplifier

45 Watt Class-B Audio Power Amplifier - EEWeb

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45 Watt Class-B Audio Power Amplifier. These goals were achieved by using a discrete-components op-amp driving a BJT complementary common-emitter output stage into Class B operation. In this way, for small output currents, the output transistors are turned off, and the op-amp provides all of the output current.

45 Watt Class B Amplifier | PDF | Amplifier | Operational ...

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45 Watt Class-B Audio Power Amplifier Circuit Diagram

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45 Watt Class-B Audio Power Amplifier. 45W into 8 Ohm - 69W into 4 Ohm, Easy to build - No setup required. These goals were achieved by using a discrete-components op-amp driving a BJT complementary common-emitter output stage into Class B operation. In this way, for small output currents, the output transistors are turned off, and the op-amp provides all of the output current.

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As for proper operation of this amplifier a Class B output stage op-amp is required, the original circuit was modified accordingly. Using a mains transformer with a secondary winding rated at the common value of 25 + 25V (or 24 + 24V) and 100/120VA power, two amplifiers can be driven at 45W and 69W output power into 8 and 4 Ohms respectively, with very low distortion …

45 Watt Class-B Audio Power Amplifier | Circuit diagram ...

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These unique 45 watt amplifier are equipped with features such as shut-down protection, cut-off protection, overload protection, overheat protection, and many other distinct features. The multifunction 45 watt amplifier come with advanced cooling …

RetroSound QUAD4 45 Watt 4-channel Power Amplifier …

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