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.
Comments: ……….
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8.5.2. Investigation of the linear regulator ripple
Half-wave output resistance: ……….. Full-wave output resistance: ………
a)
Comments: ……….
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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 : ……….
b) Critical current value: ………
c) Load characteristic of the regulator
Iload [ma] 0 5 10 20 60 100 120 140 160 180 ……
Vout
d) Regulation characteristic of the regulator:
Comments: ……….
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Width of the 'on' pulse [s] ….. 50 80 100 120 ……
Vout (Iload = 50mA)
Vout
ton