输出牛的制作（Output cattle production）.doc

输出牛的制作（Output cattle production） Output cattle make a fever sound Cattle making The sectional area (width of tongue, thickness, thickness) of the tongue of the transformer iron core determines the apparent power of the transformer. When a class of exported cattle work, the primary winding has a DC passage, and there will be a magnetic saturation distortion. Therefore, there should be a reluctance gap in the magnetic circuit of the iron core. Therefore, the average sectional area of the iron core determines the apparent power of the transformer. The output of push-pull is different. When working, the primary winding is alternating current, which will not cause magnetic saturation. Even if there is DC for some reason, there is always a gap between the EI pieces. The effect of direct current on cattle is negligible. (no longer ring cattle in this case). The apparent power of a push-pull output cow is estimated. Refer to the power transformer to calculate the formula. Try to estimate the 50W push-pull output of cattle. Primary impedance 5K5. Secondary impedance 8. Determine the cross-sectional area of the iron core: check the table to know a rated power 50W, transformer iron core cross sectional area is 26mm * 45mm. This is only just enough, not enough Hi-Fi spirit, the window also appears to be tight. Simply spend a little, choose wide window EI type silicon steel sheet, tongue width 30mm iron core, the thickness is greater than or equal to 40mm can. Make a skeleton to measure the volume of the window winding: the frame clearance is 50 mm wide and the skeleton is 18 mm deep. Self primary winding with 4000 turns. Determine the primary winding diameter: according to relevant data, the KT88 standard works when the static flow is 140 mA, and the maximum signal screen flow may reach and exceed 200 mA. FU-7 is the largest signal screen flow, 180 - 200mA. per square millimeter current carrying density 3A meter, the maximum allowable current through 200 mA, line diameter is ph