Electrical Characteristics (LM). (Refer to the test circuits. 40qC TJ qC, IO = mA, VI = 19V, CI = PF, CO = PF, unless otherwise specified). LCV LM L Voltage Regulator IC + 12V A. 78xx (sometimes L78xx, LM78xx, MC78xx) is a family of self-contained fixed linear voltage regulator integrated circuits. The 78xx family is commonly used in.

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From Wikipedia, the free encyclopedia. Articles needing additional references from January All articles needing additional references. Please help improve this article by adding citations to reliable sources. It is a component in switching regulator om7812 and is not a linear regulator like other 78xx devices.

The bridge rectifier is a classic 2KVV.

The is the most common, as its regulated 5-volt supply provides a convenient power source for most TTL components. You may choose the appropriate bridge rectifier according to your requirements. Views Read Edit View history.

78xx – Wikipedia

I designed this if power supply which is based on the famous series of voltage regulator LM78xx. On this project I use the LM in TO footprint, which can be screwed to the rear of a heatsink for better heat dissipation. Everobody on the internet has copied it from somewhere. January Learn how and when to remove this template message.


This site uses Akismet to reduce spam. The 78xx line are positive voltage regulators: Industrial Electronics and Control.

LCV LM L Voltage Regulator IC + 12V A

The R3 can be placed in your project box and can be replaced with a potentiometer of similar price. Unsourced material may be challenged and lm78112. If you can do better, create your own site!

This project is a simple variable power supply using the famous LM regulator IC. Thanks for your comments. These devices support an input voltage anywhere from around 2. This page was last edited on 5 Decemberat In other projects Wikimedia Commons.

The second board is for the transformer, the board contains the base for the primary fuse and one on-off switch for V mains voltage. It consists of two boards, the main board which includes the regulator, capacitors, bridge rectifier and potentiometer and a second board that includes the mains tranformer, the fuse and a switch. Learn how your comment data is processed.

7812 Voltage Regulator Fixed Positive 12V Linear IC L7812CV

Admin, thank you for this. Encyclopedia of Electronic Components Volume 1: You will get better heat conduction if you use thermal paste between the heatsink and Lm812 before screwed together.

By using this site, you agree to the Terms of Use lm78122 Privacy Policy. Cool Projects for Open Source Hardware. Leave a Reply Cancel reply. Some devices provide slightly different voltages than usual, such as the LM78L62 6.


The SR from Datel lm7821 a full switching power supply module designed as a drop-in replacement for 78xx chipsand not a linear regulator like the 78xx ICs. Wikimedia Commons has media related to 78xx Series and Voltage regulator circuits.

This article needs additional citations for verification. The variable resistor R3 varies the output voltage Vout. LM78xx can be easily found in stores with electronic materials. There is a related line of 79xx devices which are complementary negative voltage regulators. Now be honest Spili! Mastering the Raspberry Pi.

This has given me a start and is better then many others I have seen. The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost.

For lm782 years, see 8th millennium. The electrical characteristics can be found here.

Retrieved from ” https: The LM78S40 from Fairchild is not part of the 78xx family and does not use the same design.