Week 17

Title:
Testing piezo-electric transducer

Objective:

1. To test the output of piezoelectric.
2. To make the observation

Method:

1. Connect 4 pieces of piezoelectric in series and parallel connection and record the output.

Result:

In parallel connection, the piezoelectric will produce about 2-16V AC depends on the mechanical stress that had been apply towards. But the output voltage is stable because of the mechanical stress is not the in the same amount of pressure.
If in series connection, it will step up the the voltage up to 24V AC.

Conclusion:

.The piezoelectric will produce the AC output voltage when the mechanical stress is apply.

Week 16

Title:
Step up voltage (DC-DC) module

Objective:

1. Find suitable module to boost up the voltage.
2. To fulfill the next objective for output. 

Method:

1. Research from the internet (e-bay.com, lelong.com.my)

Result:

DC 3-34V to DC 4-35V DC-DC Adjustable Boost Step-up Power Supply Module

Description:

• LM2577S non-isolated boost module
• Input Voltage: DC 3-34V
• Output Voltage: DC 4-35V (continuously adjustable)
• Input Current: 3A (max.)
• Output Current: 2.5A (max.)
• Operating Temperature: -40 deg C to +85 deg C

Conclusion:
The output voltage can be vary from 4-35V DC and can be use for output.

Week 15

Title: Find LED display meter for voltage and current.

Objective:

1. To display to others how many voltage and current that piezoelectric produce.

Method:

1. Do the research in the internet.
2. Find the available type in the market.

Result:

LED Digital Volt / Amp Panel meter / Amp 10 A (Red & Blue)

Description:

Size: 48mm X 29mm X 22mm Range: DC3.2-30V ( Can Measure Power Supply Directly ) Display: 0.56 "LED digital tube Display color: red (Volt) & blue (Amp) Refresh rate: about 500mS / times Input: DC voltage Resolution: 1% +1 digit Power Supply: DC3.2 -30V Operating temperature: -10degree ~ 65 degree red cable DC+, black cable DC - Attention if the Voltage over 30V ,it maybe will burned.

Conclusion:

This meter can easily show how many current and voltage has been produce by piezoelectric and others can see easily.