Basic CBT Module-3 Servomechanisms and Electronics

The basic CBT module BM-03 covers the essential principles of electronic devices. It also provides the introduction to servo control systems. The topics covered in this CBT are listed below. The CBT comprises of 273 pages of courseware that include text, audio, and graphics.

  1. Feedback Signals
    • Rate and position sensing and control
      • Terminologies and Definitions
      • Open Loop System
      • Closed Loop System
      • Examples
    • Transformers
      • Principle of operation
      • Voltage and Current Transformation
    • Inductive Pick-off
    • Synchro Systems
      • Torque Synchros
      • Control Synchros
      • Differential
      • Resolvers
    • Capacitive Pick-off
  2. Signal Processing Devices
    • Summing points (Definition, Purpose)
    • Adder (Functional Description, Application)
    • Subtractor (Functional Description, Application)
    • Integrator (Functional Description, Application)
    • Differentiator (Functional Description, Application)
    • Limiters (Functional Description, Application)
    • Modulator (Functional Description, Application)
    • Demodulator (Functional Description, Application)
  3. Control Systems
    • Transients and Steady-state
    • Unit Impulse Response
    • Damping
    • Power requirements
    • Clutches
    • Override and lockout protection
    • Null and loop error sensing
    • Synchronization systems
    • Force rebalance systems.
  4. Semiconductors
    • Semi-conductor Materials
    • Electron configuration
    • Crystalline structure
    • Electrical properties
    • Effect of impurities
    • Doping to produce P type and N type materials
    • Diodes
      • Rectifier Diode
      • Zener Diode
      • Symbols and identification
      • Characteristics
      • Operation and functions
      • Applications
    • Transistors
      • NPN and PNP types
      • Symbols and identification
      • Characteristics
      • Biasing
      • Operation and functions
      • Applications
      • Effect of temperature
      • Introduction to FETs
    • Integrated circuits
      • Types (Analog /Digital)
      • Structure (TTL / MOS)
      • Applications (Functional Descriptions only)
        • Gates, Flip Flop
        • Encoders, Decoders, Multiplexers
  5. Electronic Circuits
    • Operational amplifiers
    • Terminology
    • Operation
    • Applications (inverting/non-inverting amplifier, summing amplifier, differential amplifier, integrator, differentiator,voltage follower, comparator)
    • Multi-stage amplifier
    • Class A direct-coupled Amplifier
    • Class A inductor-coupled Amplifier
    • Class A transformer-coupled Amplifier
    • Push-pull Amplifier
    • Negative and Positive Feedback
    • Multivibrators and oscillators (Operation and characteristics)
  6. Digital Test Equipment
    • Types (Frequency Counter, Digital Multimeter, Signal Generator, Oscilloscope)
    • Principles of Operation
    • Applications
  7. Cathode Ray Tubes
    • Types; Construction and principles of operation; Electrostatic and magnetic
    • deflection; Raster, Stroke pulse, interlace scanning; Rho-theta and X-Y screen
    • formats.
  8. Electrostatic Sensitive Devices (ESD)
    • Sources Electrostatic Charge
    • Damage
    • Special Handling (identification, packaging, and protection)
    • Requirements
    • Examples of ESD (components/parts)
    • Anti-static Protection Devices

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