Creating Schematic Diagram presentation.pptx

Presentation about schematic diagram. Presenting the definition, different symbols used in making schematic diagram. and some introduction about basic principles in electronics.

1. Schematic Diagram

2. Schematic Diagram Schematics are our map to designing, building, and troubleshooting circuits.

3. Electricity Electricity is the phenomena associated with the presence and flow of electric charges .

4. ELECTRICITY TERMINOLOGIES Polarity Having two oppositely charged poles, one positive and one negative. Polarity determines the direction in which current tends to flow. Electrical circuits need to be checked for polarity prior to energizing.

5. Current Electric current is a flow of electric charge through a medium. This charge is typically carried by moving electrons in a conductor such as wire . It can also be carried by ions in an electrolyte . The current was measured in amperes.

6. Resistance The electrical resistance of an electrical element is the opposition to the passage of an electric current through that element; the inverse quantity is electrical conductance , the ease at which an electric current passes.

7. Conductor An electrical conductor is anything that carries or moves current. Copper is the most common conductor and used in wiring. Silver and gold also are conductors. Some non metallic conductors would be solutions containing salts.

8. Non-Conductors Non-conductors are substance etc. that does not easily conduct heat or electricity. Those materials which cannot pass electricity are known as non-conductors. They do not pass electricity because they do not have free electrons and ions to help in flow of current. Non-conductors have large resistance and zero conductivity. They are widely used in coating of electric wires. Plastic, glass, rubbers, ceramic are examples of non-conductors. Moreover, they are also known as insulators.

9. Dynamic VS Static Electricity Static electricity refers to the accumulation of excess electric charge in a region with poor electrical conductivity (an insulator), such that the charge accumulation persists. Dynamic electricity refers to the movement of the charges in good electrical conductors.

10. Resistors The most fundamental of circuit components and symbols!  Resistors  on a schematic are usually represented by a few zig-zag lines, with  two terminals  extending outward. Schematics using international symbols may instead use a featureless rectangle, instead of the squiggles.

11. Capacitors There are two commonly used  capacitor  symbols. One symbol represents a  polarized  (usually electrolytic or tantalum) capacitor, and the other is for non-polarized caps. In each case there are two terminals, running perpendicularly into plates.

12. Switches Switches  exist in many different forms. The most basic switch, a single-pole/single-throw (SPST), is two terminals with a half-connected line representing the actuator (the part that connects the terminals together).

13. Switches with more than one throw, like the SPDT and SP3T below, add more landing spots for the the actuator.

14. Electronic Components with their Respective name identifier

15. Switch

16. Capacitor

17. Resistor

18. Names and Values Values  help define exactly what a component is. For schematic components like resistors and capacitors, the value tells us how many ohms or farads they have.

19. Names and Values For other components, like integrated circuits, the value may just be the name of the chip .

20. Names and Values The value of a schematic component calls out its  most important characteristic .

21. Names and Values Component  NAMES  are usually a combination of one or two letters and a number.

22. Names and Values The letter part of the name identifies the type of component –  R ’s for resistors,  C ’s for capacitors,  U ’s for integrated circuits, etc.

23. Names and Values Component name on a schematic should be unique.

24. R2 220

25. Names and Values Component names help us reference specific points in schematics.

26. Names and Values The prefixes of names are pretty well standardized.

27. Name Identifier Component R Resistors C Capacitors L Inductors S Switches D Diodes Q Transistors U Integrated Circuits

28. DC or AC Voltage Sources We can use either of these two symbols to define whether the source is supplying direct current (DC) or alternating current (AC):

29. Integrated Circuits Integrated circuits  accomplish such unique tasks, and are so numerous, that they don’t really get a unique circuit symbol. Schematic symbols for an ATmega328 microcontroller (commonly found on  Arduinos ),

30. Batteries Batteries , whether they’re those cylindrical,  alkaline AA’s  or rechargeable  lithium-polymers , usually look like a pair of disproportionate, parallel lines:

31. Fuse Fuses – devices which are generally used to limit large inrushes of current:

32. Light-emitting diodes (LEDs)

33. What name identifiers are used for the following: Resistor R LED D

34. Reading Schematics Understanding which components are which on a schematic is more than half the battle towards comprehending it.

35. Nets, Nodes and Labels Schematic nets tell you how components are wired together in a circuit. Nets are represented as lines between component terminals.

36. Junctions and Nodes Wires can connect two terminals together, or they can connect dozens. When a wire splits into two directions, it creates a  junction . We represent junctions on schematics with  nodes , little dots placed at the intersection of the wires.

37. Junctions and Nodes Nodes give us a way to say that “wires crossing this junction  are  connected”.

38. Activity Create a simple diagram of a LED connected to a SPST switch and a DC power source.

39. Quiz