WEEK. NO. 27

1. Reference Learning Outcome :-Plan and Interface the LCD, LED, DPM panels to various circuits and evaluate performance. (Mapped NOS: ELE/N8107)
2. Duration :- Professional Skill 35 Hrs.; Professional Knowledge 05 Hrs.(for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Different types of seven segment displays, decoders and driver ICs.
  • Concept of multiplexing and its advantages.
  • Block diagrams of 7106 and 7107 and their configuration for different measurements.
  • Use of DPM with seven segment display.
  • Principles of working of LCD.
  • Different sizes of LCDs.
  • Decoder/ driver ICs used with LCDs and their pin diagrams.
  • Use of DPM with LCD to display different voltage & current signals.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• Digital panel Meter
• 205. Identify LED Display module and its decoder/driver ICs. (05 Hrs.)
• 206. Display a word on a two line LED. (06 Hrs.)
• 207. Measure/current flowing through a resistor and display it on LED Module. (06 Hrs.)
• 208. Measure/current flowing through a sensor and display it on a LED module (DPM). (06 Hrs.)
• 209. Identify LCD Display module and its decoder/driver ICs. (06 Hrs.)
• 210. Measure/current flowing through a resistor and display it. (06 Hrs.)

WEEK. NO. 28, 29 & 30

1. Reference Learning Outcome :-Detect the faults and troubleshoot SMPS, UPS and inverter. (Mapped NOS:ELE/N7202)
2. Duration :- Professional Skill 120 Hrs.; Professional Knowledge 40 Hrs.(for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Concept and block diagram of manual, automatic and servo voltage stabilizer, o/p voltage adjustment.
  • Voltage cut-off systems, relays used in stabilizer.
  • Block Diagram of different types of Switch mode power supplies and their working principles.
  • Inverter; principle of operation, block diagram, power rating, change over period.
  • Installation of inverters, protection circuits used in inverters.
  • Battery level, overload, over charging etc.
  • Various faults and its rectification in inverter.
  • Block diagram of DC-DC converters and their working principals.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• SMPS and Inverter
• 211. Identify the components/devices and draw their corresponding symbols. (03 Hrs.)
• 212. Dismantle the given stabilizer and find major sections/ ICs components. (06 Hrs.)
• 213. List the defect and symptom in the faulty SMPS. (05 Hrs.)
• 214. Measure / Monitor major test points of computer SMPS. (07 Hrs.)
• 215. Troubleshoot the fault in the given SMPS unit. Rectify the defect and verify the output with load. Record your procedure followed for trouble shooting the defects. (08 Hrs.)
• 216. Use SMPS used in TVs and PCs for Practice. (05 Hrs.)
• 217. Install and test the SMPS in PC. (05 Hrs.)
• 218. Install and test an inverter. (05 Hrs.)
• 219. Troubleshoot the fault in the given inverter unit. Rectify the defects and verify the output with load. (08 Hrs.)
• 220. Construct and test IC Based DC-DC converter for different voltages. (08 Hrs.)
• 221. Construct and test a switching step down regulator using LM2576. (08 Hrs.)
• 222. Construct and test a switching step up regulator using MC 34063. (08 Hrs.)

WEEK. NO. 31  &  32

1. Reference Learning Outcome :-Detect the faults and troubleshoot SMPS, UPS and inverter. (Mapped NOS:ELE/N7202)
2. Duration :- Professional Skill 120 Hrs.; Professional Knowledge 40 Hrs.(for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Concept of Uninterrupted power supply.
  • Difference between Inverters and UPS.
  • Basic block diagram of UPS & operating principle.
  • Types of UPS : Off line UPS, On line UPS, Line interactive UPS & their comparison
  • UPS specifications. Load power factor & types of indications & protections
  • Installation of single phase & UPS.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• UPS
• 223. Connect battery stack to the UPS. (07 Hrs.)
• 224. Identify front panel control & indicators of UPS. (05 Hrs.)
• 225. Connect Battery & load to UPS & test on battery mode. (06 Hrs.)
• 226. Open top cover of a UPS; identify its isolator transformers, the UPS transformer and various circuit boards in UPS. (08 Hrs.)
• 227. Identify the various test point and verify the voltages on these. (05 Hrs.)
• 228. Identify various circuit boards in UPS and monitor voltages at various test points. (05 Hrs.)
• 229. Perform load test to measure backup time. (08 Hrs.)

WEEK. NO. 33

1. Reference Learning Outcome :- Identify, Test and verify characteristics of Photovoltaic cells, Modules, Batteries and Charge controllers. Install a solar panel, execute testing and evaluate performance by connecting the panel to the inverter. (Mapped NOS: ELE/N5902)
2. Duration :- Professional Skill 60 Hrs.; Professional Knowledge 15 Hrs. (for above learning out come)

TRADE THEORY (Professional Knowledge ) :- 

• • Semiconductor properties and types. P-type and N-type semiconductors, PN junction, etc.
  • Conversion of solar radiation to electricity.
  • Main materials used to develop solar cells (Silicon, Cadmium tellurides, etc.)
  • Light sensitive properties of PN junction.
  • Difference of photo electric and photo voltaic effects of a PN junction.
  • PV cell characteristics, I–V curve, effects of temperature.
  • Photovoltaic effect.
  • Photo voltaic module: minimal functional specification, cells per module, max watts per module, maximum voltage at max power, maximum current at max power.

TRADE PRACTICAL (Professional Skills  With Indicative Hours) :- Job no. & Name of the Practical

• 1. Identify and Test an LED and a Photodiode to verify the photo emitting effect and light sensitivity. (04 hrs)
• 2. Test a Photo voltaic cell for different illumination levels and verify photovoltaic property. (04 hrs)
• 3. Plot I-V curve for photovoltaic cell based on the illumination at constant temperature. (04hrs)
• 4. Plot I-V curve for photovoltaic cell based on temperature at constant illumination. (04 hrs)
• 5. Test photovoltaic cell in sunlight at various angles of inclination and direction. (04 hrs)