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Polish-Japanese Institute of Information Technology Electronic laboratory

Experiment

8 POWER SUPPLIES OF ELECTRONIC EQUIPMENT

Academic year

Names Marks Date

Supervisor ...

8.5. EXPERIMENTAL PART

8.5.1. Investigation of the unregulated power supply

a) C1 is disconnected. Output signals for half-wave and full-wave rectifier.

(2)

Comments: ……….

……….

……….

……….

……….

……….

……….

8.5.2. Investigation of the linear regulator ripple

Half-wave output resistance: ……….. Full-wave output resistance: ………

(3)

a)

Comments: ……….

………

………

………

Block diagram for measurement the load characteristic of the linear regulator

Iload [ma] 0 20 40 60 80 100 120 140 160 180 ……

Vout

Output resistance at Iload=100mA : ……….. Ripple voltage at Iload=100mA : ……….

(4)

b) Critical current value: ………

c) Load characteristic of the regulator

Iload [ma] 0 5 10 20 60 100 120 140 160 180 ……

Vout

(5)

d) Regulation characteristic of the regulator:

Comments: ……….

……….

……….

Width of the 'on' pulse [s] ….. 50 80 100 120 ……

Vout (Iload = 50mA)

Vout

ton

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