basic electronics components
- 3. Circuit components used in robotics Active Voltage source Current source Passive Resistors Capacitors Inductors Semiconductor devices Diodes Transistors
- 4. Coding Types of values written • 47R • 5R6 • 6k8 • 1M2 Uses
- 5. Used in two configurations • As variable resistor • As potentiometer
- 6. PTC • Resistance increases with temperature NTC • Resistance decreases with temperature Equation of operation Thermistors LDR •Light Dependent resistor •Made of CdS,CdSe,PbS •Uses •On off light relay •As a light meter to measure intensity of light
- 7. ◦ Types Ceramic Electrolytic ◦ Measuring ◦ Uses
- 8. Secondary cells • Can be reused by charging • Lead acid • Lithium ion • Lithium polymer Primary cells can be use only once Zinc–carbon battery Alkaline battery
- 9. • The number of poles defines the number of separate contacts for a switch position (inputs) • The number of throws is the number of switch positions available(output)
- 10. • Construction of DPDT switches • Uses of DPDT switches •For reversal of polarity •Single switch to control 3 different outputs
- 12. At the junction, free electrons from the N-type material fill holes from the P-type material.
- 13. 1. Half wave rectifier 2. Full wave rectifier a. Centre tapped b. Bridge type Input Output Half wave rectifier
- 14. Centre - tapped Bridge type Input Input Output Output
- 15. An LED is a semiconductor light source. Uses ◦ General lighting ◦ Displays ◦ Traffic and street lights ◦ Decorative purposes
- 16. A photodiode is a type of photo detector capable of converting light into either current or voltage, A photodiode is designed to operate in reverse bias. Used in solar cells
- 17. Passive devices ◦ Resistors ◦ Capacitors Active devices ◦ Batteries Semiconductor devices ◦ Diodes ◦ LED ◦ Photodiode
- 18. ◦ Mechanically controlled electrically activated switch ◦ Uses To switch from low current to high current
- 20. Used for reversal of direction of motor Working
- 23. Transfer resistor Types:-BJT, FET Uses ◦ Amplifiers ◦ Switches ◦ Regulators
- 24. Principle- Because a transistor's collector current is proportionally limited by its base current, it can be used as a sort of current-controlled switch.
- 25. A small switch may be used to control a relatively high-current load Very quick and efficient
- 27. A simple and less power consuming display Two configurations ◦ Common anode ◦ Common cathode For displaying numeric digits Used in condition of small spaces
- 28. Write the terminals which will display the following digits? ◦ 6 ◦ 9 ◦ 2 ◦ 5
- 29. Internal connections in a breadboard
- 30. How to use is it? Measuring resistance Measuring current Measuring voltage Checking continuity Measuring the type of transistor