Hello, readers welcome to another interesting post. In this post, we will have a detailed look at Introduction to Linear Shunt Regulators. In the previous tutorial, we discussed the linear voltage regulator with the details. We discussed that the control component in the series regulator was a series pass transistor.
While in the shunt regulator is a transistor in a parallel configuration with load is a control component. In this post, we will have a detailed look at its circuit operation and some other related factors. So let’s get started with Introduction to Linear Shunt Regulators.
Introduction to Linear Shunt Regulators
- The simple configuration of this category of the regulator can be seen in the below figure denoted as a’ and components of the circuitry are shown inthe block diagram denoted as b’.
- In this shunt regulator configuration, the control component is a transistor in parallel combination with the load can be seen in the below figure.
- The resistance R1 is linked to the series combination with the load. The working of the circuitry is like to the series regulator with the difference is that regulation is obtained through regulating the current passing in the parallel transistor Q1.
- When the value of output voltages goes to decrement due to variation in the input voltage or load current generated by the variation in the load resistance can be seen in the below figure.
- The decrement is observed by the resistances R3 and R4 and given to the non-inverting input.
- The resultant difference voltage decreases the operational amplifier output to a decrement that decreases its collector current value and raises the collector voltage.
- So the real decrement in voltage is overcome due to this increment and retains the value of output almost constant.
- The reverse process exists when the output goes to increment as can be seen in the above figure.
- With the value of current IL and VOut constant, the variation in the input voltage generates a variation in the shunt current.
ΔIS=VIN/R1
- the constant value of Vin and Vout variation in the load current causes a reverse variation in the shunt current. If there is an increment in current IL and a decrement in Is.
ΔIS = -ΔIL
- The shunt regulator is less effective than the series category but protects short circuits.
- If the output is short-circuited the load current is restricted with the series resistance to the extreme point as given.
IL(max)=VIN/R1
FAQS
What is a shunt regulator?
- The shunt regulator is the linear regulator for keeping voltage constant. Linear regulators are defined into shunt regulators and series regulators. These can produce stable voltage less as compared to the input voltage from the unstable input voltage.
What is the difference between linear and shunt regulators?
- There are two types of linear regulators, first one is series regulators and shunt regulators. The series regulator is connected in series combination between power supply and load whilethe shunt regulator is put in a parallel combination of power supply and load.
What is the difference between a series and a shunt regulator?
- Series regulators are more effective than shunt regulators sincethe current completely flows throughthe load without any bypass. They are more complex designs andare used for high-power circuits where good performance and efficiency are needed.
What are the two basic types of linear regulator?
- Linear regulator comes in two types, shunt regulators and series regulators. Mostly linear regulator comes with high rated output current. That is normally limited with power dissipation features or through current carrying features of output transistor.
Which is a characteristic of the shunt regulator?
- The features of a shunt regulator is to reduce current changes in power supply and also if load changes.
What kind of signal varies continuously?
- The electrical signal, voltage-current, or frequent of signal changes to given details. Analog signals are measured responses for variations in light, sound, temperature, and position.
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That is all about the Linear Shunt Regulators I tried my level best to make it simple for you if you have any further query ask in the comments. Thanks for reading. have a nice day.
