Find I1 and I2 in diagram shown below in terms of VS assume

Find I₁ and I₂ in diagram shown below in terms of V_S assume V_T = 0.7 volt for all diode—

From figure we see that here everything depends upon voltage. V_x

I₁ =	5 – V_x
	2K

if 0 < V_S < .7 V
Also V_x = V_S + .7 V

If V_S > 0.7 V then
The diode D₁ will be in reverse biased and

I₁ = I₂ =	5 – 1.4	= 1.8 mA
	2K

Where, 1.4 V is the voltage drop across diode D₂ and D₃

I₁ =	5 – V_x	if 0 < V_S < 0.7 V and I₁ = I₂ = 1.8 mA if V_S > .7 V
	2K

I₂ = I₁ =	5 – V_x	if V_S > .7 V I₂ = 1.8 mA if 0 < V_S < 0.7 V
	2K

I₂ = 1.8 mA if V_S > 0.7 V I₁ =	5 – V_x	if V_S > 0.7 V
	2K