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Continental Device India Limited. Data Sheet. Page 1 of 2. Continental Device India Limited. An ISO/TS , ISO and ISO Certified Company. AN, datasheet for AN – 3-pin positive output voltage regulator (1 A type) provided by Panasonic Semiconductor. AN pdf documentation and. AN Datasheet PDF Download – (AN78xx/F) 3-pin positive output voltage regulator (1 A type), AN data sheet.

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H ere is the circuit diagram of 9 V regulator using popular IC.

The is a 9 Volt voltage regulator IC with features such as internal current limit, safe area protection, thermal protection etc. C1 and C2 has blown because you might have used 16 or 25 volt capacitors use 50 volt rated capacitors only. I used a heating, so after working datasueet about 3minutes d regulator got bunt. Have you used a good heat sink. The regulator can be changed datasheey 12 volt and also for 15 volt, which is maximum for the specified transformer. How this calculation is done?

AN (Panasonic) – 3-pin positive output voltage regulator (1A type), Linear Voltage Regulators

Are you sure about diodes in rectifier. They are upside down.

Minimum should be greater than Sir i whant make a street light dagasheet project for my polytechnic diplom i am electrical engineering student so plz give me some idia sir i m wating for your answer….

Hi Harish you can use.

Hi Caloy it is not possible Hi Larry you have to use 6 1N darasheet in series in forward biased condition between regulator common and negative bus to achieve 9volts from 5 volt regulator. I have also made power supplies using this method, virtually identical to your schematic, with one difference.


I needed the power supply right away, and there is no local source for the I solved this problem by using the in place of thebut, I placed several rectifier diodes of the 1NX family, but others will work as well in series with the GND pin 2 in your schematic pin, that is, between pin 2 and the negative side of the power supply. I also connected a 3K resistor from pin 3 of the to pin 2, to provide bias current for the series diodes, but the resistor value is not critical, as long as a few mA of current flows through the diodes independent of current from pin 2 of the A 4 volt zener diode would work here also, in place of the rectifier diodes, but they are not often stocked by experimenters!

The capacitor value is not critical; I over-killed it with a 10uF electrolytic and a 0. Darasheet can also be accomplished by using a voltage divider with two resistors. One is connected in series with pin 2 and the negative supply be sure to remove the connection from pin 2 to the negative supply which is shown in the schematicwhile the other is connected from pin 3 to pin 2.

If you make the first resistor variable, you can make the power supply variable from 5 volts to about 12 volts or so, depending on the transformer and rectifier voltages and current rating. Also, it is a good idea to heat sink theas it will heat up quickly if more than a few mA is drawn from the supply. Larry I apologize if there are any errors; if I can help, contact me at lspeed1 at comcast dot net.


Really luv dis, and it helped me alot on my project wrk, which Design and construction of Automatic dattasheet light control switch thanks……….

Hi JHKNJ you can use center tapped transformer of minimum 12 0 12 or greater may be upto 18 0 18 with a good heat sink for the regulator IC, if you are likely draw datashete current. Thats a gud 1. Your email address will not be published. Circuit diagram with Parts list.

If a current of mA or above is required, fit a proper heat sink to the IC If 1A bridge is not available, make one using four 1N diodes. Previous post Next post.

AN Datasheet(PDF) – Panasonic Semiconductor

You may also like: Yes Morr you can use 15 volt secondary transformer. When i try it on MultiSim C1 and C2 exploded. Do I need a heatsink for the under 1A transformer?

Please go though notes it clearly indicates above mA you require proper heat sink. Can the regulator be changed into a 12v regulator without dqtasheet other change in the circuit? Sir, is there any way to replace transformer. Sir, can I use 9 volt transformer.

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Hi Harish grounding for electrical system at home or for any electronic gadget. Hope this is of use datahseet someone. That thing looks very nasty and slimy too. Leave a Reply Cancel reply Your email address will not be published.