Hi,
I have read datasheet of UC2842A and application circuit ( calculation ).
Questions :
1. Snubber Circuit ( RCD snubber selection ) Calculation not specified ? Please give the calculation details.
2. Is there any Simulation Model available for my Design 14 ? ( attached in this thread )
3. Explain the functionality of Qsc transistor ?
4. Explain the functionality of Q1 transistor ?
5. Explain on what range of output voltage values does the opto-isolator section switching occurs ? For example now my Vout=20V ( instead of 24V ) does the Optoisolator turns on the led ? or If Vout =24V what happens ?
6. Explain the proper frequency of switching of MOSFET ? Is the switching frequency of MOSFET same as the f=(1.72)/(Rt*Ct)) ?
7.Is there any switching frequency for the optoisolator section ?
8.How the frequency of opto isolator section is maintaining the output voltage 24V ?
9. Can I get these waveforms :
(i) Switching of MOSFET w.r.t to input voltage ?
(ii) Waveforms of Primary and Secondary voltages w.r.t to MOSFET Switching ?
(iii) Waveform for opto isolator switching w.r.t to MOSFET switching and also pto isolator switching w.r.t to output voltage ?
Note: Please all the waveforms w.r.t to DESIGN 14 pdf from the Webench.2642.WBDesign14.pdf
