More particularly, {HEAD ~ the voltage} produced by the voltage source Vs is fed to {TAIL ~ the collector} of electrodes of a pair of switching transistors Q1, Q2 through the primary winding of center tapped step up transformer T. The emitter electrode of NPN transistor Q1 and the emitter of electrode of NPN transistor Q2 are grounded, as shown 
is fed to
More particularly , { HEAD ~ the voltage } produced by the voltage source Vs is fed to { TAIL ~ the collector } of electrodes of a pair of switching transistors Q1 , Q2 through the primary winding of center tapped step up transformer T. The emitter electrode of NPN transistor Q1 and the emitter of electrode of NPN transistor Q2 are grounded , as shown
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH