Hello, readers welcome to the new post. In this post, we will discuss the Difference Between Shunt and Series Voltage regulators. The voltage regulator is electronic equipment that uses the voltage of the power supply to the required value. To get the required voltage of projects and circuit voltage regulators are used. The output of the voltage regulator is constant whether there is changes are existing at the input side. Its main feature is to save the device connected to it from damage.
The basic operation of voltage regulators is to maintain the output voltage irrespective of the change in voltage at the input. It also helps to maintain the output voltage according to the needs of the circuits. Commonly used types of DC voltage regulators are Shunt and Series Voltage regulators based on construction. Here we will discuss different parameters that provide differences. So let’s get started.
What is Shunt Regulators
- The shunt regulator circuit can seen in below diagram denoted with a component of block diagram in the other side.
- In this circuit combination of a shunt regulator, a parallel combination of transistor control components is used to have load connected.
- Resistance R1 is in series with a load point. The working of this model is as a series regulator with that regulation is done through the regulation of current in parallel transistor Q1.
- If output voltage reduces in a result of changes of input voltage or load current with a change in resistance of load the result circuit will be as
- R3 and R4 measure decay and provide non-inverting input. Resulted differential voltage minimizes the output of operations amplifiers for reducing value of collector current and increases voltage of collector
- The voltage losses are controlled with that value increases and kept output at a constant level
- The reverse occurs when output rises in the above figure we can see.
- With the constant values of current IL and Vout, changes in input voltage produce variation in current
ΔIS=VIN/R1
- The constant Vin and Vout load current changes affect reverse current changes. If there is an increase in current IL and reduced Is
ΔIS = -ΔIL
- The regulator is low efficiency as compare to the series type with short-circuit protection.
- If the output is short circuit and the load current is restricted with series resistance with extreme point shown as
IL(max)=VIN/R1
What is Series Voltage Regulator
- Here we can see the basic design of a linear regulator as the main component and circuit can denoted as b
- The control components pass the transistor in series in combination with the load of input and output.
- The output circuit checks changes in output voltage. The fault sensor makes a comparison between the sample voltage and reference voltage and the results controller compensates for maintaining constant output voltage.
- The collector of series of amplifiers is shown as
Why is a series regulator more efficient than a shunt regulator?
- Then the series regulator combination with the shunt regulator, the current used in the control circuit is like the output current. That resulted in some power losses for no load and helped to provide efficient voltage stabilization.
What are the disadvantages of shunt regulator?
- Its efficiency is low for high load current.
- it has a high output impedance.
- The DC output voltage does not vary since no source is provided
Which of the 2 types of voltage regulator is better to use?
- A linear regulator is simple and easy to use best for low noise circuits and has inefficiency for high voltage losses. For complicated designs, switching regulators provide high efficiency and flexible design for different applications, and for power conservation applications
Difference Between Shunt and Series Voltage Regulators
- The shunt voltage regulator is attached in parallel configuration with the load and series regulator in a series combination
- The shunt voltage regulator provides good regulation for high current using loads and the series voltage regulator not have good operation for high currents
- For high loads shunt regulator is used and for heavy loads series regulator used
- The constant value of output for the shunt regulator and non-constant for the series regulator
- The Shunt regulator is a high voltage and low current instrument and the series regulator is a high current low voltage device
- For low curent shunt as good efficiency and series, regulators is effective for high loads currents
Read also
- Integrated Circuit Voltage Regulators
- Introduction to Linear Shunt Regulators
- Power Supply Filters and Regulators
That is all about the Difference Between Shunt and a Series Voltage Regulator all details has explained. If you have any questions ask them here