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7812 Voltage Regulator IC

7812 Voltage Regulator IC

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  • The operating output voltage is 12V
  • The max input voltage is 35V.
  • The max output current is 1.5A
  • The quiescent (standby) current of this IC is 5mA

7812 Voltage Regulator IC

The 7812 IC is a commonly used linear regulator.  Input voltage can range from 12 – 35VDC and it outputs a fixed 12V at over 1A of current and up to 2.2A of surge current. For basic operation, no external components are required. Just hook up the input voltage and ground of the 7812 voltage regulator and you have 5V available on the output.

If you are using it at a fair distance from the supply that is providing the input voltage, then a .33uF or larger input filter capacitor is recommended. The part ideally should be a low ESR part such as a Tantalum or Mylar capacitor, but small electrolytic caps generally work fine.

Pinout:

Pinout of 7812 Voltage Regulator IC

Applications:

  • Electronic Communications.
  • LEDs and Flashlights.
  • Load Switches.
  • Electrical Power Supplies.

Also check the LM317 Adjustable Voltage Regulator IC available on Robocraze. The LM317 provides a stable, regulated output voltage in the range of 1.2V to 37V and can be adjusted using external resistors. It has a maximum continuous output current of 1.5A, a typical dropout voltage of 1.5V, and operates over a wide range of input voltages (3V to 40V) and temperatures (-40°C to 125°C). The IC features built-in current limiting, thermal shutdown protection, and short-circuit protection.

Also check the 7806 Voltage Regulator IC available on the Robocraze website. It operates at an input voltage of 5V, with a maximum input voltage of 35V and a maximum output current of 1.5A. The standby current is 5mA.

Package Includes:

  • 7812 Voltage Regulator IC

Specifications:

Output voltage 12V
Max input voltage 35V
Max output current 1.5A
Quiescent (standby) current 5mA
Dimensions 5 x 4 x 3cms
Weight 2g

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1.What is a 7812-voltage regulator?

  • The 7812 is a popular linear regulator. It accepts input voltages ranging from 12 to 35VDC and outputs a constant 12V at more than 1A of current and up to 2.2A of surge current. Simply connect the input voltage and ground to get 5V on the output.

2.What is the output voltage for IC 7812?

  • The 7812 IC is the popular linear regulator. It has an output voltage of 12VDC at more than 1Amps current and an Input voltage of 12-35VDC.These IC have a built-in current limiting and over temperature protection and tend to be fairly robust devices

3.Which IC is used in voltage regulator?

  • The 7812 series IC of fixed-voltage linear regulators are among the most widely used linear regulators and have been in use for a long time. There are a variety of integrated circuits (ICs) that can be used in voltage regulators. Some common types include:
    • Linear voltage regulators: These are ICs that use a voltage reference and an error amplifier to maintain a constant output voltage. They can be either positive or negative regulators. Examples include the LM317 (positive regulator) and the LM337 (negative regulator).
    • Switching voltage regulators: These are ICs that use a high frequency switching transistor to regulate the output voltage. They are generally more efficient than linear regulators but can generate more noise. Examples include the LM2576 (positive regulator) and the LM2596 (negative regulator).
    • Buck-boost regulators: These are ICs that can boost or buck the input voltage to produce a regulated output voltage. They are useful in applications where the input voltage can vary over a wide range. Examples include the LTC3588-1 (positive regulator) and the LTC3588-2 (negative regulator).
  • It's worth noting that there are many other types of voltage regulators available, including low dropout regulators, shunt regulators, and more. The specific IC that is best for a given application will depend on the requirements of the circuit and the system in which it is being used.

4.What is the cost of voltage regulator?

  • It is difficult to provide an accurate cost estimate for a voltage regulator without knowing more about the specific product you are interested in. Voltage regulators come in a wide range of types and sizes, and the cost can vary significantly depending on the features and specifications of the product. Some voltage regulators are very simple and inexpensive, while others may be more complex and expensive. Additionally, the cost can vary depending on the quantity you are purchasing, the brand, and the supplier. If you have a specific voltage regulator in mind, you can try looking up the product online or contacting the manufacturer or a distributor to get a more accurate price quote. Voltage regulator IC prices start at 9 - 50Rs/- at robocraze.

5.What is role of 7812 regulator in circuit?

  • The 7812 is a three-terminal voltage regulator that provides a fixed 12V output voltage. It is commonly used in electronic circuits to provide a stable +12V power supply for various components, such as microcontrollers, sensors, and other electronic devices. The 7812 regulator has a reference voltage of 1.25V, which is used to compare to the input voltage. When the input voltage is higher than the reference voltage, the 7812 regulator begins to regulate the voltage by dissipating excess current through a pass transistor. This allows the 7812 regulator to maintain a stable +12V output voltage, regardless of variations in the input voltage.
  • The 7812 regulator has several applications, including:
    • Providing a stable +12V power supply for microcontrollers and other electronic devices
    • Protecting electronic devices from voltage spikes and surges
    • Filtering noise and other electrical disturbances on the power supply line

6.How can we increase the output current of 7812?

  • The output current of a 7812 regulator is limited by the power dissipation capability of the device and the heat sink used. The maximum output current of a 7812 regulator is typically around 1A, although this can vary depending on the specific model and the ambient temperature. There are a few ways you can increase the output current of a 7812 regulator:
    • Use a larger heat sink: The 7812 regulator will generate more heat as the output current increases. By using a larger heat sink, you can dissipate more heat and increase the output current of the regulator.
    • Use a voltage regulator with a higher current rating: Some voltage regulators, such as the 7815 or 7824, are designed to handle higher output currents than the 7812. Using one of these regulators instead of a 7812 may allow you to increase the output current.
    • Use a voltage regulator in parallel: You can also increase the output current of a 7812 regulator by using multiple regulators in parallel. This will allow the regulators to share the load, increasing the overall output current capability.
    • Use a switching regulator: Instead of a linear regulator like the 7812, you can use a switching regulator, which is more efficient and can typically handle higher output currents. However, switching regulators are more complex to design and may not be suitable for all applications.