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国产1530型短波治疗机以电缆作为输出器件,患者反映疗效不佳,医务人员也认为电缆容易产生高热,且操作不便。据此,我们对该机的输出部分进行了改造。 1530型短波治疗机的原输出电路如附图所示。当输出电缆与A、B两端连接构成负载回路时,由于电缆的低阻抗特性,回路电流较大,L_2,L_3仅各为一匝。当改用电极板作为输出器件时,由于负载回路不存在直接通路,故负载阻抗猛增,致使输出功率锐减。对此,采用增加L_2、L_3的匝数来增加输出感应量。具体方法如下: 1.材料:为了避免集肤效应,最好采用φ3mm
Domestic 1530-type short wave therapy machine cable as the output device, the patient reflects the poor efficacy, medical staff also think that the cable is prone to high fever, and the operation inconvenience. Accordingly, we have carried on the transformation to the output part of this machine. The original output circuit of 1530 type short wave therapy machine is shown in the attached figure. When the output cable is connected with the A and B ends to form a load circuit, the loop current is larger due to the low impedance of the cable, and L_2 and L_3 are only one turn each. When the switch to the electrode plate as the output device, because the load circuit does not exist direct access, so the load impedance soared, resulting in sharp drop in output power. In this regard, increasing the number of turns L_2, L_3 to increase the output sensing. Specific methods are as follows: 1. Material: In order to avoid the skin effect, it is best to use φ3mm