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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The 78xx family is commonly used in electronic circuits requiring a regulated power supply due to their ease-of-use and low cost. Thanks for your comments. LM78xx can be easily found in stores with electronic materials.

78xx – Wikipedia

By using this site, you agree to the Terms of Use and Privacy Policy. Retrieved from ” https: Please help improve this article by adding citations to reliable sources. Some devices provide slightly different voltages than usual, such as the LM78L62 6. This project is a simple variable power supply using the famous LM ci IC. This has given me a start and is better then many others I have seen.

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.


I designed this variable power supply which is based on the famous series of voltage regulator LM78xx.

This page was last edited on 5 Decemberat These devices support an input voltage anywhere from around 2. Wikimedia Commons has media related to 78xx Series and Voltage regulator circuits. Leave a Reply Cancel reply. This site uses Akismet to reduce spam. It is a component in switching regulator designs and is not a linear regulator like other 78xx devices. Articles needing additional references from January All articles needing additional references.

ci On this project I use the LM in TO footprint, which can be screwed to the rear of a heatsink for better heat dissipation. Industrial Electronics and Control. The R3 can be placed in your project box and can be replaced with a potentiometer of similar price. There is a related line of 79xx devices which are complementary negative voltage regulators.

The bridge rectifier is a classic 2KVV. You may choose the appropriate bridge rectifier according to your requirements. Cool Projects for Open Source Hardware. In other projects Wikimedia Commons.

The 78xx line are positive voltage regulators: 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. You will get better heat conduction if you use thermal paste between the heatsink and LM78xx before screwed together. Unsourced material may be challenged and removed.


7812 Regulator

Admin, thank you for this. January Learn how and when to remove this template message. For the years, see 8th millennium. The is the most common, as its regulated 5-volt supply provides a convenient power source for most TTL components.

This article needs additional citations for verification. The electrical characteristics can be found here.

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If you can lc better, create your own site! Views Read Edit View history. Mastering the Raspberry Pi. The variable resistor R3 varies the output voltage Vout. The LM78S40 from Fairchild is not part of the 78xx family and does not use the same design. Now be honest Spili! Encyclopedia of Electronic Components Volume 1: Everobody on the internet has copied it from somewhere. 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.

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