Lab 6: Diodes, Rectifiers and Voltage Regulators
Procedures
Values Verification
Half-Bridge Rectifier
- Have the instructor check the circuit before connecting the mains.
- Capture and waveforms using oscilloscope (make sure both channels are in DC coupling).
- Measure and using multimeter in DC and AC mode.
Full-Bridge Rectifier
- Have the instructor check the circuit before connecting the mains.
- Capture and waveforms using oscilloscope (make sure both channels are in DC coupling).
- Measure and using multimeter in DC and AC mode.
Full-Bridge Rectifier with Capacitor
- Connect the capacitor in parallel with the load.
- Have the instructor check the circuit before connecting the mains.
- Capture and waveforms using oscilloscope (make sure both channels are in DC coupling).
- Measure and using multimeter in DC and AC mode.
- Change the channel which measures to AC coupling and measure ripple voltage using cursor function.
- Repeat for all values of capacitors.
Full-Bridge Rectifier with Capacitor and Voltage Regulator
- Add the voltage regulator and alter the circuit as shown. Make sure that the connections are safe and stable.
- Have the instructor check the circuit before connecting the mains.
- Capture and waveforms using oscilloscope (make sure both channels are in DC coupling).
- Measure and using multimeter in DC and AC mode.
- Change the channel which measures to AC coupling and measure ripple voltage using cursor function.
Voltage Regulator Characteristics
- Connect the circuit as shown, where is a DC supply source.
- Calculate the power dissipated by the voltage regulator.
- Measure , , , , and .
- Wait for a while and measure the temperature rise.