Great value for a very useful power supply. The current and voltage adjustments are very easy to use since you can selected which digit to adjust by pressing in the adjustment dial. After selecting the digit, the notched adjustment dial would increase or decrease the selected digit by one for every click of the dial. This made fine adjustments very easy.
As others have mentioned, the output defaults to the on state when the power supply is turned on. It should default to the off state. So, make sure the output terminals are disconnected before turning the power on. Once powered on, select the output to the off state, set the voltage and current to the desired levels and connect the output to whatever it is that you're powering, then turn on the output.
As others have also mentioned, the test leads that comes with the power supply are pretty useless. I found the problem is with the spring contacts on the connectors that plug into the output terminals. They do not make proper contact with the plug that they are wrapped around. I jammed a short length of copper wire under the spring and that seems to solve the problem. The better solution is to buy better leads.
The power supply has already paid for itself as I was able to revive a lithium ion battery pack by slow charging the discharged cells. This was possible because I was able to limit the current on the power supply.
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- No Additional Cost: You pay $0 for repairs -- parts, labor, and shipping included.
- Coverage: Plan starts on the date of purchase. Malfunctions covered after the manufacturer's warranty. Power surges covered from day one.
- Product Eligibility: Plans cover products purchased in the last 30 days.
- Easy Claims Process: File a claim 7/365 via phone. Most claims approved within minutes. We will send you an Amazon e-gift card for the purchase price of your covered product. In some cases, we will replace or repair it.
- Terms & Details: Plan contract will be emailed from Asurion within 24 hours of purchase. This will not ship with your product.
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This item: HANMATEK HM305 DC Power Supply Variable, 0-30V/0-5A Adjustable Bench Power Supply with 4-Digit LED Display, Display Power, Lock Function(Button), Protective Function, One Key Switch Control
$79.99
Get it by Saturday, Oct 5
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$119.99
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$32.49
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Product Description
HANMATEK Upgraded HM305 Mini DC Power Supply
The 2020 upgraded HANMATEK HM305 has an amazing design. The full-screen design and the all-metal body make it look so exquisite. Compared with similar products, it has a smaller size, only 9.0inx5.9inx3.1in, compact and portable. Based on feedback from a large number of users, we have increased Output Switch control, Anti-collision lock and other practical functions. We used a better circuit board. This variable DC power supply is a very stable, regulated DC power supply. It has the characteristics of low ripple and noise, high accuracy, high reliability, perfect overload and short circuit protection circuits, and it is especially suitable for laboratory, school and electronic maintenance. Designed for laboratory and industrial use.
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| HM305M | HM305 | HM310 | |
| Customer Reviews |
44
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738
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473
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| Price | $55.99 | $79.99 | $89.99 |
| Display Mode | 3-Digit Display | 4-Digital Full LED Display | 4-Digital Full LED Display |
| Output DC Current | 0- 5A | 0- 5A | 0- 10A |
| Output Voltage | DC 0-30V | DC 0-30V | DC 0-30V |
| Display Data | Voltage / Current | Voltage / Current / Power | Voltage / Current / Power |
| Display Resolution | Voltage: 0.01V Current 0.001A | Voltage: 0.01V Current 0.001A | Voltage: 0.01V Current 0.001A |
| Security | Multiple protections | Multiple protections | Multiple protections |
| Output Power Cord | ✓ | ✓ | |
| Input Power Cord | ✓ | ✓ | ✓ |
| Voltage Ripple: | 10mVrms | 10mVrms | |
| Current Ripple: | 8mVrms | 8mVrms |
From the brand
HANMATEK
THE BEST VALUE IN ELECTRONIC TEST & MEASUREMENT
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HANMATEK was established in 2008. With over 10 years of manufacturing and R & D experience in the measuring instruments industry, it works on technological innovation, product usability improvements, and the creation of more economical and stable solutions.
HANMATEK is Dedicated to Providing You with the Highest Quality Products and Satisfied After-Sales Service that Make Your Life Simple and Better.
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Variable DC Power Supply
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Programmable DC Power Supply
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Programmable DC Power Supply
Compare with similar items
This Item  HANMATEK HM305 DC Power Supply Variable, 0-30V/0-5A Adjustable Bench Power Supply with 4-Digit LED Display, Display Power, Lock Function(Button), Protective Function, One Key Switch Control | Recommendations  |  |  | |
| Price | $79.99 | $56.96 | $63.99 | -22% $144.99 List: $184.99 |
| Delivery | Get it by Saturday, Oct 5 | Get it by Saturday, Oct 5 | Get it by Saturday, Oct 5 | Get it by Saturday, Oct 5 |
| Customer ratings | ||||
| Sold by | HANMATEK US-Official store | Borui Tools | NICE-POWER Official | Amazon.ca |
| power supply design | — | External | Internal | Full Modular |
| form factor | — | — | ATX | ATX |
| cooling method | Air | Air | Air | Air |
| max. input voltage | 220 volts | 240 volts | 110 volts | 240 volts |
| min. input voltage | 0 volts | 100 volts | 0 volts | 100 volts |
| system bus connector | — | — | 24 Pin, 6+2 Pin | 4 Pin |
| fan count | 1 | 1 | 1 | 1 |
| wattage | 30 watts | 150 watts | 300 watts | 850 watts |
| output wattage | 30 watts | 150 watts | 300 watts | — |
| current rating | 5 amps | 10 amps | — | — |
| fan size | 80 millimeters | 120 millimeters | — | 135 millimeters |
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Power cord does not fit.
The unit looks great, and the price is reasonable. But the power cord is a little too big to plug into the unit. It is a shame that a quality control issue renders the unit unusable even from the start.
Top reviews from Canada
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Reviewed in Canada on April 2, 2023
Verified Purchase
Very low noise.
You can set the voltage and amperage before engaging using the soft button on the front panel.
The only thing that bugs me is the terminal pitch. See pics.
Update:
Has become one of my favorite power supplies on the bench.
Exceeds advertised rating.
You can set the voltage and amperage before engaging using the soft button on the front panel.
The only thing that bugs me is the terminal pitch. See pics.
Update:
Has become one of my favorite power supplies on the bench.
Exceeds advertised rating.
Images in this review
Reviewed in Canada on February 7, 2024
Verified Purchase
The unit looks great, and the price is reasonable. But the power cord is a little too big to plug into the unit. It is a shame that a quality control issue renders the unit unusable even from the start.
Images in this review
Reviewed in Canada on May 31, 2021
Verified Purchase
Top reviews from other countries
Lou Rod
Buena para el principiante o estudiante de electronica.
Reviewed in Mexico on March 20, 2022Verified Purchase
Todd B.
What is not to like?
Reviewed in the United States on June 4, 2021Verified Purchase
eric Omar Hernández falcón
Excelente
Reviewed in Mexico on March 22, 2021Verified Purchase
Ryan
Great power supply for the money. Remove screen protection film for even better view.
Reviewed in the United States on June 30, 2020Verified Purchase
PJ1991
Works just fine
Reviewed in the United States on March 6, 2024Verified Purchase
