Wiring Schematic Diagram

300W RF Power Amplifier Circuit

Here you got it! 300 W rf authentic ability for fm transmission. 300 W radio ability amplifier for accomplished 88 – 108 MHz !!! This fm amplifier has 2 TP9383 abundant to bear up to 300W.

The combination of controller IC LM4651 and LM4652 Class D MOSFET power amplifier IC power amplifier solution provides a high efficiency, suitable for powered speakers, subwoofers and amplifiers car quality.

The LM 4651 is a fully integrated conventional pulse width modulator (PWM) driver, which contain low-voltage circuit, short, overshoot, and thermal shutdown circuit protection. The IC has a standby function which shuts the pulse width modulation, minimizing the current bid.

The LM 4652 is a fully integrated H-bridge power MOSFET IC in a TO220 power pack. The IC has a temperature sensor to alert the LM4651 when the die temperature exceeds the threshold limit.

Used together, LM4651 and LM4652 as a simple, compact, efficient, high quality audio power amplifier complete solution for protection, usually seen only in class AB amplifiers.

The maximum efficiency of this circuit is 85% to 125 W with an expected attenuation of greater than 100 dB. The THD at 10W, 4 ohm, 10 - 500 Hz max. 0.3%. The supply voltage can not exceed ± 22V.

The LM3875 is an audio amplifier for high power output capable of delivering 56W of continuous average power to a load 8. The performance of the LM3875, utilizing its maximum instantaneous auto temperature (° Ke) (Spike ™) protection circuitry, places it in a class above discrete and hybrid amplifiers by providing a yes, dynamically protected area of safe operation (SOA). SPIKE protection means that these parts are fully protected against output overvoltage, voltage surges caused by shorts to the supplies, the peak temperature thermal runaway, and instantaneous.

This is an audio amplifier circuit provides power to 1000 watts Blazer. This interesting routes under a lot of good and lively treble. Importantly, you should choose the power source, which has been quite high voltage class GND-70V 70Vdc 10A is the current low level

The transistors are 2SC3858 (NPN) and 2SA1494 (PNP) and the bandwidth characteristic of high, excellent area of ​​safe operation, high linearity and high gain. 2SC5200 driver transistors (NPN) and 2SA1943 (PNP). All devices are rated at 230 V, with the power transistors has a dissipation of 150 W and the drivers are 50W.

This circuit describes a process amplifier, power supply and the tests that are inherently dangerous. Nothing described in this article should not even be considered unless a wealth of experience, we know exactly what you are doing and are willing to assume full responsibility for 100% of what you do. There are design issues that may require analysis, fault detection and / or modification.

This project is mainly in answer to those for whom no amount of power is enough. I have lost count of the number of times people have asked if it's alright to increase the supply voltage on every circuit published, and in general the answer is no - it's not alright. Every design on this site is optimised for the stated power. There is always some flexibility, but you must be very careful to make sure that transistor safe operating area (SOA) is not exceeded. There is also a maximum voltage for any semiconductor, and devices must be selected to ensure they are used within their ratings. MORE...