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- Using constant voltage:
Using constant voltage means that the voltage is constant and the current adjusts the output according to the requirements of the load.
Connect the power cord, turn on the switch, short press the power button, leave the power supply in the initial state, adjust the power button clockwise to the maximum, adjust the voltage to the required voltage value , connect the load to the power output black (-), red (+) terminals can be used normally.
Note: The set current must be higher than the normal operating current, otherwise constant current, DC LED and voltage drop will occur.
- Constant current use:
Using constant current means that the current is constant and the voltage adjusts the output according to the load itself.
Plug in the power cord, turn on the switch, short press the on-off button so that the power supply is in the initial state, adjust the voltage to the desired voltage value, higher than the normal constant current work of 2 to 5V , introduce the tension. Adjust the current counterclockwise to the minimum, at this point the DC indicator lights up, the voltage slowly drops to 0V, connect the load to the output of the black (-) and red (+) terminals, set adjust the current clockwise to the current value required for normal use.
Note: The DC indicator should always be lit; if it changes to CV, you should adjust the preset voltage or decrease the constant current setting or check whether the load is connected correctly. The use of constant current should confirm that the load is suitable for the use of constant current.
HANMATEK HM305M 0-30V 0-5A laboratory power supply
1. Input voltage: 220V 50Hz
2. Source effect: ≤0.2% (calculated at nominal value)
3. Voltage stability: ≤0.2% (calculated at nominal value)
4. Current stability: ≤0.2% (calculated at nominal value)
5. Load stability: ≤0.2% (calculated at rated value)
6.Residual ripple and noise: ≤0.2% (calculated at nominal value).
7.cooling method: intelligent temperature control fan, forced air cooling.
One-click output:
Can be set to start automatic output or have no output.
Quick setting:
The voltage and current values can be quickly set using the buttons.
High precision:
Display resolution:
Voltage: 0.1V three-digit display.
Current: 0.01A three-digit display
Intelligent fan:
This laboratory power supply adopts intelligent fan, when the voltage is below the load, the lighter fan will not rotate or slow down its rotation, which effectively reduces noise and extends the life of the fan.
Lightweight:
It measures 250mm*71mm*136mm and weighs only 753g naked.
Packing list:
HANMATEK HM305M laboratory power supply *1, power cord *1, manual *1, test cable *1.
willy
Reviewed in Belgium on February 26, 2025
Neemt weinig plaats in en eenvoudig af te regelen!
Dubwicht
Reviewed in Canada on January 5, 2025
I am using this as a general purpose power supply specifically for electroplating. Easy to set and works very well. Great value.
Mike
Reviewed in Canada on January 5, 2025
Came well packaged and in good condition. Good experience.
Customer
Reviewed in the United States on January 3, 2025
nice performer works great and is very accurate.
Jan Lundh
Reviewed in Sweden on January 17, 2025
Snabb och smidig att använda. Bättre än förväntat!
Roy
Reviewed in Canada on April 11, 2025
This is a fantastic little cute power supply. Well made and takes up no space on the work bench. It's 5amps,I can't make it for for less.
Allan Becker
Reviewed in Canada on September 29, 2024
I originally purchased this to power a fuel injector pulser that I was using in a home-built injector cleaner apparatus. It is a well-finished item, easy to adjust and has come in handy for various other tests etc. since then. Output is accurate, smooth and steady
André
Reviewed in Canada on September 21, 2024
C'est plus un jouet...
vandegar louis
Reviewed in Belgium on August 3, 2024
Bricolage électronique
jagjeet
Reviewed in Canada on July 17, 2024
A few months ago I bought this desktop power supply expecting it to have power ripple and not be very accurate because it seemed like a really good price for a 150W power supply (40 CAD) and I’m happy to say even after putting it through a lot of abuse it still works perfectly I even tested it with a cheap ossciliscope and the power ripple is oly around 100mV Peak-to-Peak. It also feels high quality with it being fully metal.
R. B.
Reviewed in the United States on June 13, 2024
Review from a retired electrical engineer.This is a good supply for tinkering around with your electronic projects. I checked the displayed readings and they seem reasonably accurate. The user interface is a bit strange, so you need to learn how to operate it, but once you do, it works out pretty well. You do not have analog dials for voltage and current. The knobs adjust the readings digitally. There are a number of settings you can adjust, but most are described by the user manual, which is on the brief side. Most importantly however is that the power on state of the output switch can be programmed to default either on or off. This setting was described in the manual. There are a number of other settings that I don't know what they are for, but I recall seeing a YouTube video which described them. Now, If I could just find that video again. I did not measure the ripple or other performance parameters, but all seems just fine for my purposes. It is pretty easy to set either constant voltage or constant current so using to charge batteries is possible. You may want to consider the 10 AMP model which is just a little higher cost, but looks to have a different interface.
Alain S
Reviewed in Canada on December 3, 2024
Je suis très satisfait de ce chargeur ajustable, bonne qualité, prix juste.je le recommande.
wjgrabowski
Reviewed in Canada on April 12, 2024
Easy to use, user manual was clear and concise. Great addition to any workbench!
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