Quick 7805 voltage regulator demonstration

Table of Contents

3 terminal device that outputs a certain voltage (5V for the 7805) as long as the input voltage is at least about 2V higher than the output voltage. The 78 indicates that it is for a positive supply in relationship to ground, and the following 2 digit indicates the voltage that it outputs.

Brief circuit schematics with short video – List of pages

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All limitations of components should be checked with the datasheet. Here’s a handful of important ones, and is not guaranteed to be accurate.

  • Max supply voltage: 35V
  • Max current: 1.5A. Would need a good heat sink
  • Internal power dissipation: Internally limited (reduces output current as needed to prevent overheating.

Affiliate link ad. 7805 used in the video came from this kit.

Diagram

Simple 78xx 7805 fixed voltage regulator component schematic diagram drawn by electronzap electronzapdotcom
Simple 78xx 7805 fixed voltage regulator component schematic diagram drawn by electronzap electronzapdotcom

Video

Quick 7805 78xx voltage regulator integrated circuit IC demonstration by electronzap

Next topic: Brief split-dual supply op amp voltage follower with output polarity indicator LEDs circuit



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  • Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.