Voltage regulator-Types, Ic, Module, Alternator Explained

A voltage regulator is a circuit that produces and retains a constant output voltage regardless of input voltage or load conditions. The voltages from a power supply are held within a limit that is consistent with the other electrical components by voltage regulators (VRs).

Though voltage regulators are most widely used to convert DC to DC power, some may also convert AC to AC or AC to DC. The subject of this article is DC/DC voltage regulators.

Types of Voltage Regulators

Voltage regulators are divided into two categories: linear and switching. Both control the voltage in a system, but linear regulators have a low efficiency whereas switching regulators have high efficiency. The majority of the input power is passed to the output without dissipation in high-efficiency switching regulators

Linear Regulators

A linear regulator is an electrical device that maintains a constant voltage. The regulator’s resistance varies depending on the input voltage and load, resulting in steady voltage output. The controlling system is designed to function as a variable resistor, constantly changing a voltage divider network to retain a steady output voltage and dissipating the discrepancy between the input and controlled voltages as waste heat.

A switching regulator, on the other hand, employs an external mechanism that alternates between on and off in order to retain an average output value. The reliability of a linear regulator is limited since the regulated voltage must always be lower than the input voltage, and the input voltage must always be high enough to enable the active system to drop any voltage.

Switching Regulators

Switching regulators from Analog Devices are available in step-up (boost), step down (buck), and inverting modes. These devices can generate a fixed or dynamic output voltage and can deliver up to 2 A of current.

Low battery detector, user-customizable current ceiling, a range of switching frequencies, and a reduced number of external components are some of the features included in ADI’s switching regulator portfolio.

This dynamically optimized, scalable device family is designed to reduce the number of external components in space-constrained applications.

voltage regulator ic

A voltage regulator is an integrated circuit (IC) that maintains a constant output voltage independent of load or input voltage changes. It can do this in a variety of ways depending on the topology of the circuit inside, but we’ll concentrate on the linear regulator just for keeping this project simple.

A linear voltage regulator keeps the output voltage stable by automatically changing the resistance through a feedback loop, allowing for variations in both load and input.

ic lm317

It is a kind of positive-linear-voltage regulator that was invented by Robert C. Dobkin and Robert J. Widlar in 1970 while working at National Semiconductor. It’s a three-terminal customizable voltage regulator that’s simple to use since the LM317 voltage regulator circuit only needs two external resistors to set the output voltage.

voltage regulator  ic lm317
voltage regulator ic lm317

It is mostly used to regulate local and on-card transactions. The LM317 circuit can be used as a precision current regulator by connecting a fixed resistor between the output and adjustment of the LM317 regulator.

ic 7805

In electronic circuits, voltage regulators are very general. For a variable input voltage, they have a fixed output voltage. In our case, the 7805 IC is a well-known regulator IC that is used in a wide range of programmes. The name 7805 has two meanings: “78” indicates that it is a positive voltage regulator, and “05” indicates that it outputs 5V. As a result, our 7805 would produce a voltage of +5V.

voltage regulator ic 7805
voltage regulator ic 7805

This IC has a maximum output current of 1.5A. However, since the IC loses a lot of heat, a heat sink is preferred for projects that use a lot of currents. If the input voltage is 12V and you are consuming 1A, then (12-5) * 1 = 7W is the result. These 7 watts would be converted to heat and dissipated.

ic 723

The LM723 IC is a variable voltage regulator that can be used in a series regulator application with a current of 150mA o/p and no external pass resistor. When we use an external transistor, we get a current of 10A to move the load.

voltage regulator ic 723
voltage regulator ic 723

The maximum input voltage is 40V, and the output voltage varies from 3 to 40 volts. Present regulators and shunt regulators are two of the most common uses for this IC. This IC has low supply current drains, allowing it to be used as a folding back current limiting device with a temperature range of -55 °C to 150 °C.

ic 7812

The integrated circuit 7812 is a self-contained fixed linear voltage regulator. The IC is part of the ic 78xx family of voltage regulators. The 7812 IC is simple to use and is inexpensive. The output voltage of 7812 is 12 V, as shown by the last two digits.

voltage regulator ic 7812
voltage regulator ic 7812

The ic 7812 is a positive, which means it produces a positive voltage in relation to the earth. In the event that a circuit needs both positive and negative voltage input. The IC 7812 is used in conjunction with the 79XX family IC, which is the 7912 IC.

voltage regulator module

A voltage regulator module (VRM), also known as a processor power module (PPM), is a buck converter that converts +5 V or +12 V to a much lower voltage required by the CPU, allowing processors with different supply voltages to be installed on the same motherboard. The VRM is usually made up of power MOSFET devices in personal computer (PC) systems.

motherboard module

The voltage regulator module, or VRM, is a circuit on any motherboard that is located near the CPU. The VRM’s function is to convert the input from the power supply into usable power for the CPU and to help balance it.

voltage regulator module motherboard
voltage regulator module motherboard

Your CPU wouldn’t even turn on if it weren’t for the VRM! In addition to the RAM slots, the RAM has a much smaller and simplified VRM. However, the VRM of the CPU is normally the only thing that gets attention. Few people overclock their RAM, because RAM consumes much less power than the CPU, so it’s always overlooked.

voltage regulator alternator

A voltage regulator alternator is a vital part of the charging mechanism of your vehicle. It controls the amount of voltage provided by the alternator to maintain a constant voltage to the battery and electrical equipment in your vehicle, as the name suggests.

If you don’t have a regulator, the voltage from your alternator rises and falls with the speed at which it rotates; if you don’t have one, too much voltage will burst the fuses. Most modern alternators have internal voltage regulators, which eliminates the need for wiring; but, if you have an external, you must connect it to the alternator and ignition mechanism.

alternator failure

If the vehicle is unable to accommodate the power exerted out by the vehicle’s stock (and faster-moving) alternator, stalling, sputtering, and erratic acceleration will occur.

As a result of being overworked, the regulator burns out easily. Examine the aftermarket components with a trained mechanic or someone with thorough experience of the car is changed.

So Here Is A alternator diagram.

voltage regulator alternator diagram
voltage regulator alternator diagram

alternator wiring

So Here is alternator wiring Diagram.

voltage regulator alternator wiring
voltage regulator alternator wiring


What is a voltage regulator and how does it work

A voltage regulator produces a predetermined output voltage that stays stable regardless of changes in the input voltage or load conditions. Voltage regulators are divided into two categories: linear and switching.

What are voltage regulators used for

Any electrical or electronic system that keeps the voltage of a power source under appropriate limits is known as a voltage regulator. The is used to keep voltages within the acceptable range for electrical equipment that uses that voltage.

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