COMPONENT

AC(Alternate current)

Alternate current is that thing when positive(+) & negative(-) both flow in a cycle or flow with each other.
&                            50cycles = 1 signal





DC(Direct current)

Direct current is that thing when positive(+) & negative(-) flow in different.




COMPONENTS

CAPACITOR 
          Capacitor is a two pin component.It uses with base of the work in electronic circuit.Capacitor shows by "c".and it's value check by PF, K PF & M F.


KIND OF CAPACITOR
  1.  Simple capacitor
  2. Non pollerytic
  3. Electrolytic
   
Resistance 
              Resistance make resistivity on the way of current.It shows by "R".Resistance only a component which can make resistivity on way of current.so use for do low value of volt & signals.


KINDS OF RESISTANCE

  1. Carbon resistance
  2. Wire wound resistance
  3. Network resistance
  4. Chip resistance
  5. VDR
  6. LDR
  7. Thermister 

                         
Diode
      Diode is a two leg (head) component.1 leg is ANODE(+/positive) and second is cathode(-/negative).It's made by P & N type semiconductor.IT is a one way work component and show by "d".Diode checks by "OMS".


TYPE OF DIODE

  1. Signal diode
  2. Photo diode
  3. Rectifier diode
  4. LED
  5. Zen-er diode
  6. Tunnel diode
  7. variation diode

 

  
Transistor 
        Transistor is a 3 pin component.1 pin base , 1 pin emitter & 1 pin collect er.It shows by "Q".We get it's value by
oms.There is two type of transistor.


KINDS OF TRANSISTOR
 
  1. N-P-N
  2. P-N-P