Home > DIY Module > Power Supply DIY > LM338K 3 Bit Digital Display Step Down Buck Converter Power Supply Module Voltage Regulator DIY Kit 3A

LM338K 3 Bit Digital Display Step Down Buck Converter Power Supply Module Voltage Regulator DIY Kit 3A

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$9.35-6%Bundled Price:$8.79

Parameters:
Circuit Board Size: 9.6*5.8CM (L*W)
DC input: 3-35V;
AC input: 1-25V;
DC output:1.2-30V;
Maximum Current: 3A
Input and output the minimum differential pressure: 3V;
Maximum power consumption: 50W;

Component Listing:

NO. Component Name Quantity
1 PCB 1
2 KF301-2 1
3 terminal(red and black) 1
4 1N4007 3
5 KBL608 1
6 200ohm 1W resistor 1
7 4.7K ohm resistor 1
8 3MM blue LED 1
9 104 capacitor 3
10 50V100UF capacitor 1
11 50V2200UF capacitor 1
12 50V4700UF capacitor 1
13 101 switch 1
14 Potentiometer knob 1
15 Potentiometer stents 1
16 M3*6 screw 2
17 5K Potentiometer and the screw nut 1
18 LM7812 1
19 338K Heat sink 1
20 12V fun 1
21 LM338K 1
22 30V3A PPTC 1
23 M3*50MM screw 4
24 3MM nut 20
25 20mm copper cylinder 4
26 4MM copper sheet 4
27 4MM nut 2
28 4*10 screw 2


Diagram:




Finished Product:




I. Tested by ICStation's Outstanding Partner Ideatronic:

Learn More Details in the Video:
(The language in the video is Spanish)

 

II. Tested by ICStation's Outstanding Partner CarlosVolt Tutoriales:

https://rogerbit.com/wprb/2018/06/review-fuente-de-alimentacion-regulada-de-1-2-a-30-voltios-con-lm338k-icstation/

Learn More Details in the Video:
(The language in the video is Spanish)

Feedback

By
Rating: [5] 5 of 5 Stars! Date Added: 2021-02-18 16:40:15
Bought & built this kit. Worked ok for 3 days, then the LM338k MIL (TO-3 housing) failed. Replaced it with an LM338t (TO-220), now it works ok again. I also used another 3-wire display, with the display's V+ to the LM7812 output and the Vin to the LM338 output so it is always visible and does not fade with low output voltage. Also made the switch in the AC power supply instead of DC output.

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(1) Due to the high risk of package lost recently, we have to stop using the free shipping way these days. Hope for your kind understanding! And the $5 is for tracking number and delivery insurance ^0^ Enjoy order from us. 

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(2) Shipping time 
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7-15 working days to: Most of Asia countries
10-16 working days to: USA , Canada , Australia , UK , Most of Europe countries
13-20 working days to: Germany , Russia
18-25 working days to: France , Italy , Spain , South Africa
20-45 working days to: Brazil , Most of South America countries

2. DHL/FedEx Express

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Total price of the order >= 200USD or Total weight of the order >= 2.2KG

When the order meets to one of the above requirement, it will be shipped for FREE via EMS/DHL/UPS Express to below country. 
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(2) Shipping Time & Delivery Time

Shipping time: 1-3 days
Delivery time: 5-10 working days (about 1-2 weeks) to most of countries. 

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Note:

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3. Note
1) Delivery Time of mixed orders with items in different Shipping Status should be calculated using the longest estimate times listed. 
2) Chinese Holiday Reminder: During annual Chinese holidays, services from certain suppliers and carriers may be affected, and delivery for orders placed around the following times may be delayed by 3 - 7 days: Chinese New Year; Chinese National Day,etc. 
3) Once your order is shipped, you will receive an email notification from icstation.com
4) Track the order which with tracking number via below links:

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FedEx: www.fedex.com

 

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LM338K 3 Bit Digital Display Step Down Buck Converter Power Supply Module Voltage Regulator DIY Kit 3A
$7.14
$10.99
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