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Here's a Leach Amplifier based on 2SC5200 and 2SA1943 output power transistors that can provide up to 700W of power. The mechanical design is relatively simple, the transistors are placed on the two cooling profiles with a height of 66 mm, width 44mm, overall length 260mm. They are turned against each other Thus, from the cooling tunnel. Coolers are attaching the nylon backing which allows the assembly of transistors without washers, and thus better transfer of heat. DPS amplifier is at the top of the tunnel and the transistors are soldered from the bottom of PCB. 700W Leach Amplifier Adjust the amplifier power 700W looks easy, but we must not forget that the change in forcing transistors, the entire re-engagement of frequency offset. It is necessary to modify the current insurance policy which serves to protect the final transistors. Their tendency to be allowed to keep the transistors in the SOAR characteristics. First it was necessary to calculate all the necessary resistors and...