DROK DC Buck Converter Adjustable, DC Voltage Regulator Adjustable 4.5-40V to 1.25-37V (36V 24V 12V 9V 5V 3V) Variable Voltage Stabilizer Power Supply Volt Reducer Step Down Transformer
Key features
- •Non-isolated buck converter, dial down volt 36V 30V 24V to 12V 5V 3.7V 3.5V 3.3V 2V.
- •Analog control, using a mini screwdriver to increase or decrease output voltage by adjusting the potentiometer, clockwise to step up voltage and counterclockwise to step down voltage.
- •With over-temperature and short-circuit protection, hence it is safe to use.
- •Wide Voltage input of 4.5-40V and output of 1.25-37V but has low power-consumption.
- •Easy to make it work and convenient to accurately adjust the output voltage with a mini screwdriver.
DROK DC Buck Converter Adjustable, DC Voltage Regulator Adjustable 4.5-40V to 1.25-37V (36V 24V 12V 9V 5V 3V) Variable Voltage Stabilizer Power Supply Volt Reducer Step Down Transformer
List Price: $13.56$12.20DEALYou Save: $1.36 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.3
out of 5
Based on 10 reviews
5★
80%
4★
0%
3★
0%
2★
0%
1★
20%
Disappointed in DROK QA
Wesley Stewart✓ Verified Purchase•October 1, 2017
Ordered one on 9/21 and it tested DOA with 1.28v output regardless of the pot setting. Ordered another, which had exact same behavior. Contacted DROK, who asked for a video of me testing the converter. They agreed that something was wrong and refunded both purchases and asked me to reorder, but with dodgy components and/or assembly it isn't worth the risk
Using as a low power regulator to ventilate a battery ...
Clay Graves✓ Verified Purchase•September 23, 2017
Using as a low power regulator to ventilate a battery box. Taps off before the solar controller, and drives a couple 12v fans down around 8v. Works perfectly.
Using it for my 3D printer to reduce the 24V ...
Randy✓ Verified Purchase•March 30, 2017
Using it for my 3D printer to reduce the 24V fan outputs to 12V so I could wire a 12V fan on the outside for ventilation. A month later still working perfectly.
Science Fair Project
AmazonShopper_Kent✓ Verified Purchase•March 21, 2017
Bought this for my son's science fair project. We've connected this to a 9v power supply. It was very for my 12 year old to adjust the voltage.
Works perfectly for applications where you'd rather not have a static readout of the voltage.
Ross H. Calvert IV✓ Verified Purchase•October 31, 2016
Most of these DROKs seem to come with the big digital voltage display, which is probably very handy for use on a bench but unecessary and wasteful in an installed/embedded application. This little board let me piggyback an esp8266 at 5v on an existing 24v source that's already in the location, to add wifi control to my ancient garage door's radio-control receiver. Approximately $25 all-in to retrofit a garage door opener I can use from the phone in my pocket that also lets me see if the door is open or closed from anywhere in the world (thanks to a reed switch) is great and all, but one of my favorite parts of the project is that I didn't have to run a dedicated power line across my garage ceiling and down a wall to a permanent wall wart to get it up and running. I will definitely be buying more of these in the future.
Page 1 of 2
