PNPTransistor based DC Relay Drive make | Triggering source (-)voltage | method-2

   This video PNP transistor based 12v DC Relay control Drive Simple make it, this type transistor is a semiconductor device used to switch electronic signals and electrical power ON/OFF control than working a transistor base triggering source (-) voltage method, 

The component is using 

1. PNP transistor(BC558)

2. 12v DC SPDT Relay

3. 1K ohm resistor