The figure below is a BJT driving circuit for a relay. Consider that the relay i

Question

The figure below is a BJT driving circuit for a relay. Consider that the relay itself (excluding the diode) has no polarity. Consider that the npn transistor in figure below is not working and you don't have an identical replacement. Instead, you have a matching' pnp transistor. You decided to place this pnp transistor in the circuit without changing the pin configuration (that is, for example, the base of new one is placed at the location of the base of the old one). 8) Write/draw changes on the figure to make it working as before and briefly justify all the changes

Explanation / Answer

From above problem we can conclude that replacement of npn transistor with pnp with out changing terminals of transistor we need change base voltage to -5 V and 24 supply should be connected on emitter side. Since the direction of current flow from emitter to collector.

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