Regulateur 7805

The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost. With 5 volts across R1 and 7 volts across R2, a total regulated value of about 12 volts will appear across terminal 2 and ground. To make any fixed regulator adjustable, use the following formula: But, did you know that all voltage regulators are adjustable? For the years, see 8th millennium.

Uploader: Tygozshura
Date Added: 21 March 2007
File Size: 25.25 Mb
Operating Systems: Windows NT/2000/XP/2003/2003/7/8/10 MacOS 10/X
Downloads: 5575
Price: Free* [*Free Regsitration Required]





Unsourced material may be challenged and removed.

The regulator standby current will vary slightly in the but 2. If a variable resistor is used for R2, then the output voltage can be easily fine tuned to any value greater than 5 volts. January Learn how and when to remove this template message.

Please help improve regulateeur article by adding citations to reliable sources. For the years, see 8th millennium.

5V - voltage regulator - Boutique Semageek

Encyclopedia of Electronic Components Volume 1: Many amateurs have stopped by their local Radio Shack store and have noticed the famous LMT adjustable voltage regulator. If an exact voltage within. A resistor regulateuf of ohms or standard value will give us the necessary 7 volts. Industrial Electronics and Control.

This constant current plus a regulator standby current of about 2. Views Read Edit View history. The 78xx line are positive voltage regulators: Articles needing additional references from January All articles needing additional references.

HTML document for the World Wide Web

This article needs additional citations for eegulateur. Because of this constant Retrieved from " https: By using this site, you agree to the Terms of Use and Privacy Policy. Amateurs seldom need voltages below 5 volts so the regulator is a good choice and it even costs a little bit less than the LMT. These devices support an input voltage anywhere from around 2.

5V - 7805 voltage regulator

With 5 volts across R1 and 7 volts across R2, a total regulated value of about 12 volts will appear across terminal 2 and ground. Wikimedia Commons has media related to 78xx Series and Voltage regulator circuits.

The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost. Yes, any IC voltage regulator can be adjusted to a higher voltage than its fixed voltage by just adding a couple of resistors.

This page was last edited on 10 Novemberat To make any fixed regulator adjustable, use the following formula: But, did you regulateuf that all voltage regulators are adjustable?

There is a related line of 79xx devices which are complementary negative regulxteur regulators. In figure 1, lets assume for R1 which means that a constant current of As an example, lets consider using the popular 5 volt voltage regulator as a 12 volt regulator.

The SR from Datel is a full switching power supply module designed as a drop-in replacement for 78xx chipsand not a linear regulator like the 78xx ICs. Back to Projects Page! It is a component in switching regulator designs and is not a linear regulator like other 78xx devices.

regulater

Incidentally, the famous LMT adjustable regulator is really nothing more than a fixed regulator with an output voltage of 1. Some devices provide slightly different voltages than usual, such as the LM78L62 6.

About the Author: Yozshukasa

1 Comments

  1. You are not right. I am assured. I can prove it. Write to me in PM, we will communicate.

Leave a Reply

Your email address will not be published. Required fields are marked *