This report describes the design and building a DC POWER SUPPLY that can vary the output voltage from –31 to 0 volt and 0 to +31 volt ,with the maximum output current 1.0Amp , also the fixed output voltage 5 volt, with the maximum output current 0.5Amp is included in this power supply. In each part, there is a protection circuit to protect the components when output is shorted circuit. At the end, power supply has been working successfully as we design. The linear power supply has been tested for the property of load regulation, line regulation, ripple and output value have been shown in the tables in this report.
By
Pradshaya Karnthaworn
Jumnong Pimparod
