Lm317 Application Circuit

4 lead acid battery charger circuits see 4 lm317 lead acid battery charger circuits for 6v 12v and 24v battery.

Lm317 application circuit.

It can also provide a float function for high voltage uses. Using lm317 and 2n3055 so easy and cheap. Few useful circuits using the voltage regulator ic lm317 is shown here. Input voltage can be up to 40v and output voltage can be adjusted from 1 2v to 37v.

In past circuits external battery charger control jim keith 11 21 2013. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Lm317 circuits projects 12 browse through a total of 12 lm317 circuits projects. The lm317 ic helps in current limiting thermal overload protection and safe operating area protection.

Low voltage battery level indicator jim keith 06 11 2014. Circuit diagram lm317 voltage regulator ic. And in fine 1 25v to 20v. It can supply greater than 1 5 a at the output.

Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. Circuit operation referring to the shown circuit diagram the configuration looks pretty straightforward two lm317 ic s can be seen one configured in its standard voltage regulator mode and the. Adjust voltage in steps 3v 6v 9v 12v. Some assorted useful lm317 application circuits from national semiconductor pdf datasheet has been discretely explained in this chapter through the relevant circuit illustrations.

It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. Lm317 d lm317 ncv317 voltage regulator adjustable output positive 1 5 a the lm317 is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1 5 a over an output voltage range of 1 2 v to 37 v. Lm317 is a three terminal voltage regulator ic with a high output current value of 1 5a. Some circuits based on lm317 voltage regulator.

The discussed lm317 configuration is so accurate that it becomes ideally suitable for all such specialist current and voltage regulated applications. In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. The ic lm317 promises countless interesting and useful power enhancement circuits applicable in numerous fields where well dimensioned power supplies become crucially important. 0 1 load regulation typ.

Lm317 is a three terminal voltage regulator ic from national semiconductors. 0 01 v line regulation 1 5 a output current adjustable output down to 1 25 v current limit constant with temperature 80 db ripple rejection short circuit. With automatic charging and full charged indicator using tl431. The lm317 ic has many features such as current limiting thermal protection and safe operating area protection.

Up to now this battery level indicator design was limited to 12 24v applications. Lm117 lm317 n wide temperature three pin adjustable regulator 1 1 features 1 for a newer drop in alternative see the lm317 typ.