Features:

  • ▲HIGHER PRECISION WITH DATA HOLD FUNCTION - It is more precise to switch between coarse and fine tuning only by pressing one adjusting knob lightly from 0 to 30V, 0 to 5A. To press two knots 3 seconds simultaneously for holding a set of values and then press 3 seconds to release
  • ▲4 DIGITS READINGS WITH BACK-LIT LED DISPLAY - With a 0.01V and 0.01A resolution, 4 digits provide more accurate and clearer visible readout for the voltage and current value, extremely durable and easily visible even in low-light usage, meeting the needs of most people, ideal for small labs or the hobbyist at home
  • ▲HIGH-QUALITY WITH ESSENTIAL SAFETY - Grounding wire, thermal protection, voltage overload and short-circuit protection ensure the safety; The built-in fan reduce the operation noise, prolonging the life of product effectively
  • ▲CONSTANT VOLTAGE & CURRENT OPERATION MODE - Easy to dial in the desired voltage with the encoded-controlled fine and coarse adjustment knob, can easily see the amperage and voltage change as circuit components are switched in and out
  • ▲WHAT YOU GET - 1 x MDC01 Power supply host , 1 x Output power cord , 1x Input power cord , 1 x User manual ,1 x Warranty Card(24 Month Warranty)
One important feature determined this purchase

I shopped for quite sometime before purchasing this Tach Life power supply. The one defining feature that set this unit apart from the many other units is the output button. This allows the voltage or current to be set before actually sending current to the device you are working on. None of the other power supplies in this price range seemed to have this feature. The electronics I work on periodically are very expensive and somewhat touchy so I cannot risk sending too much current to the device while trying to set the voltage output. I am pleased with the quality and look of the unit and believe it was well worth the twenty or so extra dollars to have the piece of mind that I can set the output voltage prior to sending voltage to my project. No regrets with this purchase. Highly recommend simply because of this added output switch feature.

VERY GOOD INITIAL IMPRESSIONS, NICE PRODUCT FOR THE MONEY, VERY PLEASED SO FAR

Im hesitant to give a glowing review before owning this for some time since so many of these entry level supplies prove to be sketchy and unreliable, but Ive had good luck with Tacklife products and I like this item so much I had to give some initial impressions - so far after a day or so evaluating the supply inside and out im really very impressed with its performance and overall build quality (so far) and I like it very much especially since its not a virtual carbon copy of all the other budget beige boxes with one of a dozen or so odd brand names that seem to come from the same equipment farm in china. Im sure this one does too, but the overall thought in design is more professional looking design and build quality seems a touch better with a lot of small indicators that tell me time was spent in design & seems it was indeed designed for Tackllife to their specs and a bit more more attention seems to have been paid in both design and build quality. I love the switch that allows turning off the output jacks without turning off the whole unit, the case has plenty of air vents with a very nice looking textured vinyl finish that gives it a much better look than just paint - it goes together nicely with very good fit and finish including the plastic front control panel bezel and its not a total flexible flyer when the cover is off. I found no intrinsically bad wiring or overly sloppy work inside the unit, everything is properly grounded, wiring is heat shrunk at the terminals and there are large heatsink plates both in the middle of the main ps board where the thermal overload is mounted and another mounted for the voltage regulator on the case bottom that extends heat removal duties from the large heatsink plate into the case bottom itself, and its just a small touch but the exhaust fan in back has a nice chrome wire grille thats more flow-efficient and professional in appearance than just crude holes punched into the sheet metal, and again theres a 6A 5mmx20mm glass fuse in the AC plug socket but be aware this unit is not switchable for 120v/220v its 120 only - but again there are small touches that to me hopefully all indicate an eye towards decent overall design & build quality. The controls work perfectly as designed with a nice quality feel no roughness or looseness and its reasonably easy to dial in most any setting with the push to change control design. I also like the fact it has a four digit display, some budget units only have three and the display is crisp and clean with no readout issues on my example and the readout values match my Fluke meter almost exactly throughout the range. If I had any real complaints it would be the main power switch is on the back, but thats a small nitpick really since theres a button to turn off the outputs if desired. One negative to me the capacitors are as seemingly always of the questionable "Cheng" brand and of chinese origin, but one could change these if desired for name brands it would be easy to do in this simple build design - however they are 105*C high temp caps so they say. The grounded PC style power cord seems huge in scale compared to the small case of the unit itself--very thick, safe and heavy duty looking but in reality its a standard 18 guage wire which should be more than adequate for this power level and its grounded with a 6A 5mmx20mm fuse present in the plug-in jack with what appears to be a place to mount a spare. I was please also that this unit has not only a common terminal but also a green grounded terminal for applications that require it. Ive already beat this to death, but I want to stress how nice the case design fit and finish is, except for the small size it does not have quite the cheap cheesy feel one might expect based on others ive seen, its very nicely constructed for the price and the unit presents itself well on a bench, appearance wise its nothing one feels like apologizing for-lol Its a switching design and traditionally they are considered more "noisy" than more expensive transformer based designs and the manual claims less than 3mV of ripple, but so do other makes so this may or may not be a bit optimistic, but I knew this going in and unfortunately I have no way to measure it but I know its good enough for my simple purposes - but one should always be aware if your working with overly sensitive electronics you may want to spend more and get a tranformer based linear style power supply as these designs are always quieter than switching designs, just depends on what your needs and budget require. At this moment I have say I have no reason not to recommend the Tacklife MDCO1, so far I feel ive gotten my moneys worth considering its a low budget item to begin with. The way I see it this one is a breath of fresh air in a sea of beige box clones and im hoping its as good as other Tacklife gear I own, if so I may buy another. So far highly recommended.

It works exactly as advertised. A must have for any Electronics Bench Power Supply!

Very impressed with the build quality, and it have several features that most others don't have. This is a Must have for any commercial or hobbyist that needs an accurate voltage and amperage Bench/Test power supply. Great resolution "incremental control" of Voltage (0.03vDC - 31.00vDC) Current (0.010Amp - 5.00Amp). Also has output switch, allowing you to set power needs then switch on to send to terminal. Yes, you can change Voltage/Amperage with in use. Great product, Fantastic price ($50.12) on sale, or ($69.67 retail). I have 3 units now, just ordered 4th today. Highly recommend this unit and the seller.

What an awesome power supply

I really liked the way the course/fine voltage/current controls work. It also has a nice feature that you can monitor either what the supply is set at or what the actual output is. This is nice so that you can set the current limit without putting a load on it. Attached is a scope trace showing the output at 10V with a 9 ma load. The scope is set to 10 mv/div. The measured peak to peak variation is 60.6 mV with RMS voltage variation is about 2 mV on average. The specified Ripple and noise is 1 mVrms. So, under these conditions it's running about twice that specified. It may very well do better than this with a larger load. In spite of this I think this is a very good power supply and I would have no question of buying another. For the price, this is comparable to other supplies that I've used that are many times the cost of this one.

Great little DC switching power supply

This is a really nice DC switching variable supply. I was looking for something small and lightweight to use as a bench supply. My requirements were a floating ground so I could use it with another supply to create +/- DC voltages for working with op amps, light weight, small , and course and fine voltage setting. This met those requirements and more. The voltage and current settings can be set course, one volt at a time, using the digits to the left of the decimal, or fine using the digits to the right of the decimal. To switch from course to fine just push in the adjustment dial. The adjustment dials are rotary encoders so the adjustment in precise 1 volt and 1/100th of a volt steps. There is a mechanical toggle switch on the back for tuning the unit on and off. When first turned, on the supply always comes on with the output off. There is an output soft push button on front of the unit to turn the output on. This nice because you don't have to remember to disconnect from the circuit before you turn the unit on to set the output voltage level and you wont forget that you had the supply at a higher voltage last time you used it and accidentally applying too much voltage to your circuit. I have not used the supply floating voltage yet, but I pretty sure it should float because the negative terminal is not grounded to the AC ground lug and the ground terminal is. All in all, this is a really nice supply for the price. I plan to buy a second one.

Great addition to the work station!

I am glad that I finally decided to purchase a DC power supply for my workbench. It makes it much easier to troubleshoot electronic devices. It can go up to 30 volts at 5 amps, which makes it a 600W power supply (P=I X E). I used it to test some old CB radios, and it worked like a charm! It did raise some interesting questions, mainly why a CB radio pulls higher current at higher channels. It is really easy to operate. You can push the dials to switch from coarse adjustments to fine adjustments for both voltage and current. When you run it as a constant voltage source, it will tell you how many amps you are drawing. I will probably set up an adapter and use the constant current mode to charge the various batteries I have for rc cars. It is lightweight, but has a good build quality. There's no rattles or wiggles that I have found. The voltage is a bit off according to my Fluke meter (which I trust over this device), but it is close enough for everything that I will be doing with it. I have been playing with the idea of making my own power supply, but I am happy that I got this one instead.

Compact bench power supply with great features

This is a very nice quiet running very compact bench power supply. I was looking for a stable power supply for my service bench that does not take up a lot of space and has accurate voltage setting and proper over-current limiting. The Tacklife MDC01 is a good fit figuratively and literally. It is great to get both 30V/5A output and 10mV/1mA adjustability at this price point. I especially like the front panel output control button that allows the voltage and current limiting to be set before the output terminals are activated. In operation, the cross-over between constant voltage and constant current limited output is very seamless. RMS conducted noise in the MDC01’s output falling within the passband of my Fluke 8060A meter is under 1 mv RMS and typically 0.4 mv at any voltage and current setting. I did not test for radiated RF noise. Of particular note is that the output setting and readout both handled by the MDC01 microprocessor, so what you see is what you get - unlike other brands that are essentially a power supply and a meter in one box. At currents above 20 mA and voltages above 20 mV, the output is right on, typically better than 0.25% error. For example, I connected a 1000.5 Ohm resistor and set the output to 30.00 Volts and the internal meter indicated 30 mA (same as measured). Setting the current limit to 20 mA resulted in an output indication of 19.80 V (current regulation within 1%). At low voltage and/or current outputs error increases. For example a 2 mA setting is 1.760 mA measured or 10 mV is 14 mV measured. Unless you routinely want to work at the very, very low output end of the MDC01’s capability, the output accuracy is surprisingly good and more than adequate for a service bench power supply. The voltage and current settings are kept in memory when the AC power is switched off or the unit is unplugged. When AC power is reapplied, the output terminals are automatically switched off. In my testing so far, I have not seen any tendency to generate a spurious output before the output enable button is pressed. Note the output terminals will default to off in the case of power failure and you must manually press the enable button to turn output on; there is no setting to automatically energize the output upon application of AC power. I believe you would be hard pressed to find better features in a bench power supply at this price point.

Good build construction, nice performance and OK design.

This is well designed and built DC switching variable power supply. I’ve summarized Pros and Cons below so it’s easier to gage this unit’s performance: Pros: - Nice build construction. - Small foot print. Although dimensions are shown on the description, I was expecting a larger device. - Voltage and current settings can be set in two modes: course and fine. Switching between them is done just by pushing the adjustment dial. This is a nice departure from older units where additional dials were included. - Output push button on the front of the device. This is great when working on quick project prototypes (i.e. no need to include a circuit switch/toggle button). - Hold function to work with a fix output. - Although the internal fan can be hard, it’s definitely quieter than other offerings. Cons: - It’s not the most attractive design. If you care about that, other offerings on Amazon at similar price range may suit you better. In my case, it’s not a big issue. - Main on/off button located on the back (not a big issue anyways). All in all, a great addition for my workbench.

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