Q1)圖1↑
Calculate the voltages with respect to ground at point A and B.
(Assuming D(1) and D(2) are both silicon diodes and V(D)(ON)=0.7V)
http://i926.photobucket.com/albums/ad110/alantse30/-1.gif
Q2)圖↑
Assuming the V(F) of D1,D2,D3 and D4 are 700mV and the transformer's turn ratio(primary : secondary) is 10:20, the peak input voltage Vp is shown below, calculate:
i) The Vrms of the primary winding
ii)The Vrms and Vp(sec) and secondary winding of the transformer, show your answer in V.
iii) The peak voltage and average voltage across R(L)
iv) The peak Inverse Voltage across the diode.
更新1:
ii)The Vrms and Vp(sec) and secondary winding of the transformer, show your answer in V. = Vrms(S) = Vrms(P) x 0.707 = 21.2V = ≤21V Vrms(P)既然係10.6, Vrms(S) = Vrms(P) x 0.707=10.6 x 0.707 =7.5V 如果計到係21.2V,應該係用Vp(S)=30 x 0.707 =21.2V 另外,可唔可以教下我iii) The peak voltage and... 如何計到=30V 我唔係好識,請博士教下我!!萬分感激