Constant DC voltage is required from a variable AC voltage. Which of the following is correct
order of operation?

In order of obtain a constant dc voltage from a variable acsource following operations should be performed:1. Rectifier: it
converts full ac signal to pulsating dc signal.
2. Filter: The pulsating dc signal is converted to pure dc signal.
3. Regulator: It provides stable dc voltage independent to the load current and ac source voltage variations.