MCH-K305D K303D DC Power Supply Portable Mini Digital Switch
SKU: 29394540367

MCH-K305D K303D DC Power Supply Portable Mini Digital Switch

Sale price$34.70 Regular price$38.55
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

MCH-K305D K303D DC Power Supply Portable Mini Digital SwitchMCH K305D MCH K303D mini switching regulated adjustable DC Power Supply SMPS single channel 30V 5A variable with cable. MCH K305D MCH K303D switching power supply with three digit display for repairing mobile phones and laptops. The switching DC power supply adopts a special miniature design, which is small in size, light in weight and easy to operate. Features: 1. This mini DC power supply adopt the multi coil high precision positioner to fine tune

MCH-K305D MCH-K303D mini switching regulated adjustable DC Power Supply SMPS single channel 30V 5A variable with cable. MCH-K305D MCH-K303D switching power supply with three-digit display for repairing mobile phones and laptops. The switching DC power supply adopts a special miniature design, which is small in size, light in weight and easy to operate.

Features:
1.This mini DC power supply adopt the multi coil high-precision positioner to fine tune the current and voltage, and the ultra high sensitivity is achieved.
2. High quality and good performance, adopt advanced chip technology, intelligent cooling system. And it has longer service life.
3. It is made of rugged metal material,simple and elegant.
4.Both switch DC power supply is portable, small size and light weight, so it is easy to operate.


Specifications:

Model No.: MCH-K305D MCH-K303D

Line Voltage: 110V/220VAC, 50Hz-60Hz

Input Current : 0.9A

Output Voltage Range: 0-30V

Output Current Range: 0-3/5A

Voltage Display Accuracy:±0.5%

Current Display Accuracy:±0.5%

Efficiency: >85%

Voltage Regulation

Load Regulation(10-100%): 50mV

Line Regulation(200-240VAC) : 20mV

Ripple & Noise(P-P) :  50mV

Current Regulation:

Load Regulation(10-100%): 20mA

Line Regulation(200-240VAC) : 20mA

Ripple & Noise(p-p): 20mA

Others Specifications:

Operating Ambient: -10°C to + 60°C, 30%RH to 90% RH

Size: 7(W) x 16(H) x 22(D) cm

Packing Weight: 1.8kg

Parameters:

model

MCH-K303D

MCH-K305D

The output voltage

0-30V

0-30V

The output current

0-3A

0-5A

display

Three digit

Three digit

Input voltage

104-127VAC(60HZ)

Power supply effect

CV≤0.01%+2mV   CC≤0.2%+2mA

Load effect

CV≤0.01%+5mV   CC≤0.2%+5mA

protection

Current limit and short circuit protection

Operation environment

-10  ℃ to +60 ℃, 30%RH to 90%RH

Ripple and noise(P-P)

20MA

Load adjustment degree(10-100%)

20MA

Line voltage adjustment (10-100%)

20MA

Efficiency

 >85%

Current display precision

±0.5%

Voltage display presision

±0.5%


Product display

1. Materials is full efficient and reliable


Military-grade circuit board, advanced patch technology, seckill in-line design. Adopting high-quality components, DC power supply is more efficient

2. Simple design but not simple functions

Ultra-simple shape design contains 20 years of rigorous and precise production technology to maximize portability and achieve maximum application with small machines.

3. Metal plastic, Rugged pressure

The selection of sturdy and pressure-resistant hardware material body, thickness is about 2mm. The fuselage vents conform to the airflow principle. Reject all counterfeit materials and refurbishment.

4. Super movement, Multiple protection.

The small model has a big effect. Compared with the large-volume power supply, it has the same protection function and performance. The performance linear power supply is higher, overload, over-voltage, over-current, current-limit, multiple protection, and be relieved to use.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 29394540367

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 1130 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Diamond Dave
Whiting, US
★★★★★ 4
Great information!
Format: Paperback
This is a very well designed book with so much information. I wish there was a more detailed index in order to find what you need. In my book, the first index page was missing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2025
A
Verified Purchase
abcwva
San Leandro, US
★★★★★ 5
very helpful Rifing book
Format: Paperback
still learning to use this book as it is a wealth of information about Rife frequencies. I have GB4000 and SR4 equipment and this supplements the Universal frequency book that came with them. This book was recommended by folks in the online GB4000 Users group.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
J
Verified Purchase
JC
Bozeman, US
★★★★★ 5
Great reference for RIFE devices
Format: Paperback
I've been using RIFE frequency sounds for addressing some problems. Now I got an affordable RIFE device that comes with tons of programmed setting, yet impossible to cover all. I like this books is very well organized and includes lots of good information that will allow me to program my own settings for specific needs. I do recommend it to any person interested in getting these frequencies on paper. Worth the investment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2024
S
Verified Purchase
Skeeter
New York, US
★★★★★ 5
Great book for frequency work
Format: Paperback, Format: Paperback
Wow, If you are into frequency work. This is a very informative reference guide, with lists of frequencies. 256 pages just like this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
L
Verified Purchase
LADC
Grantham, US
★★★★★ 5
Helpful, durable, and very thorough in the presentation of boundaries
Format: Spiral-bound
I love this for several reasons. I use it in my therapy practice with clients. There are different types of boundaries and examples and sometimes clients feel It’s not a very big topic, however, it is. You can use the book weekly with a client across many sessions. The book is well-made and you can use an erasable marker with it. The ink doesn’t come off just apply a little alcohol to a cloth. I fear this is also very durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2025

recommand products