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1.2 – 15V/3A adjustable regulated power supply
- Rajkumar Sharma
- 36.459 Views
- moderate
- Tested
- SKU: EL35817
- Quote Now
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Specifications
This kit provides a variable output power supply ranging from 1.2 to 15 V @ 3 A. It uses Low Dropout Positive Regulator LM1084 in TO220 package for delivering variable output voltage.
- Input – 18 VAC/DC
- Output – variable output from 1.2 ~ 15 V @ 3 A Regulated low ripple DC voltage
- Heatsink for regulator IC
- On board bridge rectifier to convert AC to DC
- LED indication at input of IC
- Zener trimmed band gap reference, current limiting and thermal shutdown (provided by IC feature)
- Power Battery Terminal (PBT) for easy input and output connection
- Onboard PCB mounted Potentiometer (POT) for varying the output voltage
- Filter capacitors for low ripple DC output
- Four mounting holes of 3.2 mm each
- PCB dimensions 46 mm x 58 mm
Schematic
Parts List
LM1084 Datasheet
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PCB
where is the pcb design sir
I’ve added the Gerbers and PCB in PDF on the downloads above.
Sir which amp transformer uses sir
You need a transformer that will be able to deliver ~3A
Can i use 24v transformer here? or does the regulator cant handle it? If it does do i need to change the resistors/capacitors?
Using a 24Vac transformer will exceed the maximum input voltage of the regulator. This regulator can’t be adapted to accept bigger voltages than 29V at it’s input.
Thanks! How about if i use 12Vac transformer? What would be the maximum output voltage of the power supply?
With a 12Vac transformer you will have ~13-14V max output voltage.
Is there other voltage regulator i can substitute? LM1084 is not available here
This circuit is designed for LM1084. Check for other power supplies here: https://www.electronics-lab.com/projectcategory/projects/power/
if i want to get +/- 1.5v DC – 15v DC, what must i add to circuit?