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看过家电检修技术2002年第7期陈之方《代换行管出现过热问题处理一法》后,心中甚喜,喜的是又多一条经验可以借鉴。待读过几遍后却发现了一点问题,令人费解。陈之方说:“为使2SD2253温升降低,将一只100Ω小电位器并联在该管的b极与e极之间,调节行管温升降至最低,在不影响行管正常工作的前提下,选择一个最小阻值。取下电位器,测阻值为0.9Ω,
Watched the appliance repair technology in 2002 No. 7 Chen Zhifang “Substitution line management overheating problem to deal with a law”, the heart of the hi, hi is one more experience can learn from. After reading several times but found a little problem, it is puzzling. Chen said: "In order to reduce the temperature rise of 2SD2253, a 100Ω potentiometer parallel in the tube between the b pole and e pole to regulate the temperature drop to a minimum, without affecting the normal operation of the premise, Select a minimum resistance. Remove the potentiometer, the measured resistance of 0.9Ω,