【Daily Question】Question from Issue 20150908
Thread Content
Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. In a series voltage regulator circuit with an amplification stage, when it is operating normally and the desired output voltage is 18V with a drop of 6V across the control transistor, and a capacitor is used for filtering in the rectifier circuit, the effective value of the secondary voltage of the power transformer should be ( ). A. 12V B. 18V C. 20V D. 24V 【Production and Management Division】We are seeking moderators and technical discussants to join us
In a series voltage regulator circuit with an amplification stage, under normal operation, if the desired output voltage is 18V and the voltage drop across the control transistor is 6V, and the rectifier circuit uses capacitive filtering, then the effective value of the secondary voltage of the power transformer should be (c
In a series voltage regulator circuit with an amplification stage, when it is operating normally and the output voltage is required to be 18V with a drop of 6V across the control transistor, and a capacitor is used for filtering in the rectifier circuit, the effective value of the secondary voltage of the power transformer should be (C). A. 12V B. 18V C. 20V D. 24V
In a series voltage regulator circuit with an amplification stage, under normal operation, if the desired output voltage is 18V and the voltage drop across the control transistor is 6V, and the rectifier circuit uses capacitor filtering, then the effective value of the secondary voltage of the power transformer should be (C)
--------C.20V ------------------
C, 20V-----(18+6)/1.2=20
In a series voltage regulator circuit with an amplification stage, when it is operating normally and the output voltage is required to be 18V with a drop of 6V across the control transistor, and a capacitor is used for filtering in the rectifier circuit, the effective value of the secondary voltage of the power transformer should be (24V); therefore, the correct choice is (D)