Electronic Devices - Diode Applications - Discussion
Discussion Forum : Diode Applications - General Questions (Q.No. 55)
55.
In a voltage regulator network with fixed RL and R, what element dictates the minimum level of source voltage?
Discussion:
2 comments Page 1 of 1.
Millize said:
4 years ago
By voltage division of a typical Zener voltage regulator circuit.
VL = Vs (RL) / (RL +R). Since VL = VZ then VZ = Vs (RL) / (RL+R) to get Vs we simply rearrange the formula.
Vs = VZ (RL+R) / RL, it is given that the value for RL and are is fixed thus the only parameter that can control the value of Vs is the Zener Voltage VZ.
VL = Vs (RL) / (RL +R). Since VL = VZ then VZ = Vs (RL) / (RL+R) to get Vs we simply rearrange the formula.
Vs = VZ (RL+R) / RL, it is given that the value for RL and are is fixed thus the only parameter that can control the value of Vs is the Zener Voltage VZ.
Sainath said:
9 years ago
If RL and R are fixed then IL also fixed to depend on the VZ.
So the minimum voltage will be depending upon the VZ.
So the minimum voltage will be depending upon the VZ.
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