Dr. Tang Buqi, a native of Yongchuan County, Sichuan Province, is a famous doctor in Sichuan and belongs to Vulcan School. He is a representative figure of Vulcan school, and is praised by the people as the Vulcan of the Tang Dynasty. He is the author of the book "Syndrome Differentiation and Treatment of Cough". Tang Buqi 194 1 After graduating from Sichuan University, he was assigned to work in the Civil Affairs Department of Sichuan Province. From 65438 to 0957, Tang Bu began to devote himself to the research of Chinese medicine. With a college Chinese background, he has extensively read the classics of traditional Chinese medicine in past dynasties, struggled for decades, carefully observed and inferred, and established his own cough science under the guidance of Tang Huo imperial doctors.
1980, Tang Buqi brought the completed manuscript to Beijing, and asked Professor Ren Yingqiu from Beijing College of Chinese Medicine (now Beijing University of Chinese Medicine) to review it. Professor Ren is one of the most prolific educators of Chinese medicine. He read the whole book with great interest, praising it as a secret that coincides with Yu Yu's theory, but actually coughing.
Main parameters of voltage stabilizing tube
1, voltage stabilizing Uw: Voltage stabilizing refers to the voltage at both ends of the voltage stabilizing tube when it works normally, and different voltage regulators have different voltage stabilizing.
2. Steady-current Iw: Steady-current is the current value corresponding to voltage stabilization on the reverse volt-ampere characteristic curve, but it is only the selected reference value.
3. Maximum stable current Iwm: When the voltage stabilizer tube works, when the reverse current exceeds a certain limit, the tube will be damaged due to overheating, which is called thermal breakdown. The limit of this reverse current is the maximum stable current of the voltage regulator.
4. Voltage-temperature coefficient αv: This is a coefficient used to explain that the adjustment value of the lamp tube is affected by temperature change. Generally speaking, the temperature coefficient of the voltage stabilizer below 6V is negative, that is, the temperature (