I've to submit this project in my university:
A Variable DC Power Supply with following features:
(a) Split 1.2 to 17 volts (both negative and positive polarity), capable
of supplying 800mA.
(b) Constant output of 5, 9, and -9 volts, capable of supplying 1A.
Question 1
What transformer should I go for ... ? Center-tapped or plain ... ? With what electrical ratings ... ? Voltage/Current ... ?
Question 2
Should I use some kinda regulator ICs (e.g. LM317, L7809, etc.) or should I go for zener diodes or potential dividers ... ?
Question 3
What should be the value of filter capacitor ... ?
P.S. I will have to choose my own desired load and line regulations. And I'll have to support my selection with reasons. Please tell me what should be the most suitable load/line regulations here, with reasons ... ?
A Variable DC Power Supply with following features:
(a) Split 1.2 to 17 volts (both negative and positive polarity), capable
of supplying 800mA.
(b) Constant output of 5, 9, and -9 volts, capable of supplying 1A.
Question 1
What transformer should I go for ... ? Center-tapped or plain ... ? With what electrical ratings ... ? Voltage/Current ... ?
Question 2
Should I use some kinda regulator ICs (e.g. LM317, L7809, etc.) or should I go for zener diodes or potential dividers ... ?
Question 3
What should be the value of filter capacitor ... ?
P.S. I will have to choose my own desired load and line regulations. And I'll have to support my selection with reasons. Please tell me what should be the most suitable load/line regulations here, with reasons ... ?