DJG Two-channel Audio Power Amplifier

nbsp; 1. Cooler free from the rack instead of being wrapped with the beat-isolative gasket, the transistors can immediately release the heat without temperature difference between transistors; each transistor is in the same, shortest distance from the exit of cooling air and each one bears the equivalent output power contributing to a much better reliability.

nbsp; 2.Comprehensive and precise protection program avoiding embarrassing damage or misprotection caused by mishandling.

nbsp; 3.Sourcing the on-playing music as signal then calculating the instant resistance of load based on real-time analysis of the output voltage and current. When the resistance is less than 1.6 ohm, soft protection launches to limit the driving current and recovers current in 5 ms after the failure removed. The relay is kept in connected through protection just avoid contact destruction.

nbsp; 4.Detection on the temperature of radiator and adapter at the same time; adjusting cumulative output power in continual sections; maintaining the normal output through the high-temprotection with little detectable change during performance.

nbsp; 5.Independent detection on the signal above 3KHz in the output. Once it exceeds 40V in 0.5s the protection program launches to lower the output below 40V to levitate the damage to HF drivers.

nbsp; 6. Inspection on peak voltage value of supply power to eliminate the abnormal factors destructive to amplifying circuit and shut down the output to protect the systems when necessarily.

nbsp; Second:IN THE SOLUTION TO LINEAR AMPLIFIER BASED ON LINEAR POWER SUPPLY,THE FOLLOWING INIOVATIVE TECHNOLOGIES PUT THE POWER-TO-WEIGHT RATIO AND POWER-TO-VOLUME RATIO TO A NEW, UNEXP ;ARED LIMIT

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nbsp; 1;Less heat loss due to accurate power allocat

nbsp; 2; Unique power supplying program lower the requirements of power supply

nbsp; 3; Select material and appropriate production technology maximizing the turnout of adapter

nbsp; 4;Ideal radiator structure improving heat sinking so that a smaller and lighter radiator can dissipate heat far faster and more efficiently

nbsp; Third:Protection System

nbsp; 1;The temperature of transistor and transformer are detected by temperature control circuit , when the temperature is higher than normal value , it will adjust the air-current of the heat-sink fan.

nbsp; 2; Our amplifiers have temperature LED indicator on the panel , it will lighting when the temperature is more than 75 ℃.

nbsp; 3; When the temperature is more than 80℃,it will start the system of “ value control”, value , the average output power will

down ,but the peak output power can be kept , so the dynamic will not be damaged ,it had reduced the probability of abnormal situation like “ cooling in sudden”.

nbsp; 4; Load impedance setting value detection technology , when the load impedance is lower than 1.06ohm on one channel ,it will start the over-loading protection system , the reaction speed protection precision is extremely high, this kind of technology had also solved the problem of the abnormal condition like LF short circuit under the mode of bridge ,wipe circle etc.

nbsp; 5; The protection system can detect the energy in the signal when it is higher than 3kHz , it will reduce the signal when it is exceed the normal value to protect the HF driver.

nbsp; 6;voltage is more than 242v.

nbsp; 7; DC output protection system.

Fourth :Function

nbsp; 1;It have LED indicator of bridge ,stereo ,parallel on both front and rear panel.

nbsp; 2;It have power over-loading protection on the rear panel.

nbsp; 3;It will have current limitation when open the amp amplifier

nbsp; 4;The max gain of our amplifier can set to 40 times or the sensitive set to 0.775v.