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

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, Download circuit diagram and detail - https://goo.gl/HzaJZB ------------------------------------------------------------------------------------------------ NPN Transistor based DC Relay Drive make | Triggering source (+