613 Example Of Rectifier Capacitor Input Filter Dc Output Voltage Calculation
Consider the previous example for a 250-W unit. The input power is 357 ind a voltage doubler circuit is to be used at 110 V input. The total series re^-^ce
INPUT POWER (Watts)
1000
INPUT POWER (Watts)
S ™ .°UtpUt V0ltaBe 0f a ful|-wave bridge-rectified capacitor input filter as a function of greater^ 6 S0UrCC res,stance as a P^meter. (Valid for capacitor values of 1.5 ^/VV or
1000
10 20 30 40 50 60 70
FIG. 1.6.8 Mean DC output voltage of a voltage doubler capacitor input filter as a function of load power, with effective source resistance as a parameter. (Valid for capacitor values of 3 \iFIW or greater.)
300 400 500 700 1000
10 20 30 40 50 60 70
INPUT POWER (Watts)
FIG. 1.6.8 Mean DC output voltage of a voltage doubler capacitor input filter as a function of load power, with effective source resistance as a parameter. (Valid for capacitor values of 3 \iFIW or greater.)
300 400 500 700 1000
Rs is 0.5 R, and, as previously shown, two capacitors of at least 750 (¿F will be used (in series).
Filter DC Output Voltage Vout(OC)
From Fig. 1.6.8, entering with a power of 357 W, the 0.5-il/?^ line yielA the ratio ^ouKDc/^iiKnn») = 2.6. Hence the DC voltage is 0.5-fl
The ratio improves at lower powers, and the voltage regulation may be obtained by calculating the output voltage at lower powers in a similar way.
Post a comment