DC Power Supply Variable, 0-30V 0-10A Adjustable Switching DC Regulated Bench Power Supply with 20W USB & Type-C Quick-Charge, Encoder Knob, Output Switch, 4-Digit LED Display – SPS-3010M
$59.99
Price: $59.99
(as of Jan 03, 2025 05:15:17 UTC – Details)
1️⃣【High Precision Encoder Knob】: Jesverty’s SPS-M bench power supply upgrades from traditional potentiometer coarse & fine adjustment knobs to encoder knobs making it more convenient to set your desired voltage and current! ! By turning only one knob, you can set the desired value digit by digit (setting resolution 0.01V/0.001A).
2️⃣【Output ON/OFF Button】: With a single press of the added output button, you can easily switch the output ON/OFF. When you want to adjust settings, you don’t have to remove the load or turn off the power each time! !
3️⃣【USB-A & USB-C Quick Charge】: The Jesverty Jesverty desktop power supply features Type-A and Type-C dual charging ports, both supporting 20W fast charging⚡. Convenient for charging your smartphone and powering up your Arduino UNO, Raspberry Pi, or other electronic modules for your projects.
4️⃣【Functions & Protection】: AC110V/220V switchable input, OCP over-current protection (settable), OVP over-voltage protection (fixed), Temperature-regulated cooling fan, OPN* output status setting, Screen brightness adjustment, etc. A handful of convenient functions are loaded within this tiny unit! !
🌟Note: OPN is a function that lets the unit output voltage and current as soon as you turn the power switch on without needing to push the “OUTPUT” button.
5️⃣【Compact & Lightweight】: Jesverty power source for electronics is made even more compact, measuring only 7.1(D)x3.35(W)x6.1(H)inches and weighing approx. 2.5lbs, which can greatly save valuable space on your workbench. Perfect for applications such as laboratories, educational sites, factory manufacturing tests, maintenance repairs, battery charging, anodizing, electronic work DIY, etc.
6️⃣【Items you get & Customer service】: 1 x SPS-M Unit, 1 x Power Cord*, 1 set of test leads*, 1 x instruction manual (contact information included). We provide professional technical support. Should you have any problems or questions about your order, please feel free to contact the Jesverty Customer Service via Amazon or email.
🌟Note: Power cords and the AC input settings vary depending on the destination for the product at the factory-shipment.
🌟Note: The test leads that come with the unit are merely a give-away, we recommend that you prepare test leads with sufficient current capacity if your project needs long-term use of high current.
Customers say
Customers find the system power device functional and providing good performance. They find it a good value for money, suitable for general purpose power needs like electroplating and other DC applications. The build quality, product quality, and size are also appreciated. However, opinions differ on ease of use and voltage adjustment.
AI-generated from the text of customer reviews
11 reviews for DC Power Supply Variable, 0-30V 0-10A Adjustable Switching DC Regulated Bench Power Supply with 20W USB & Type-C Quick-Charge, Encoder Knob, Output Switch, 4-Digit LED Display – SPS-3010M
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Douglas Chin –
Very nice but poorly documented.
For the price, this is a great general purpose power supply for electronic projects and many other applications. The displayed numbers are generally within 1% or +/- 1, whichever is greater. The displayed current when the power supply is in constant current mode can be inaccurate. In the sample I received, at low currents, the current it limits to is about 2mA less than the limit displayed. Strangely, at currents above 15mA, when the the supply is in CC mode, the current value displayed is the value of the current limit and not the measured current which is actually 2mA lower.The manual fails to explain a few features of the power supply. Turning the voltage knob changes the blinking voltage digit. To get a voltage digit to blink, you have to momentarily depress the voltage knob. The digit will blink for 3 seconds after it has been selected or changed. These rules make unintended voltage changes less likely. The current knob works the same way for setting currents. Voltage and current changes can be made at any time and are well behaved. I had a power supply that occasionally generated large voltage transients when being adjusted but this one doesn’t do that. The documentation mentions Over Voltage Protection but doesn’t say anything about its operation. If you press and hold the Voltage adjust knob for 3 seconds, it shows you that the OVP is enabled and set to 33V. You can’t disable it or change the voltage and the OVP light is always on. This is not a very useful feature since the only way the output can get to 33V is by being driven by an external power source. When the over voltage is detected, the supply disables the output and the OVP indicator blinks but the supply can’t do anything to reduce the output voltage. The Over Current Protection can be enabled and disabled and the threshold is separate from the CC mode current setting. It can be set by tapping the current knob to get to the digits of the current display after the long press of the knob that takes you to the place in the UI where you can turn OCP on and off. The description and manual also tell you how to enable and disable OPN but they don’t say what OPN is. It appears to control the state of the output when the unit is first powered up. When enabled, the output will be enabled after power up and, when disabled, the output is disabled after power up. When enabled, you can put the supply on a timer or a smart plug and have it power something with the same settings it had when it was powered off, when it gets power.Here are some technical details about the supply that may not interest most readers. There are two general types of power supplies: switching and linear. Although the description doesn’t say it, this is a switching power supply and that comes with some pros and cons. The pros are lighter weight, higher efficiency and low cost. The cons are more electrical noise on the output and poor transient response. The implementation of this supply does a good job minimizing the cons but they’re still present. At high load currents, noise from internal switching results in very brief 50mV spikes in the output voltage. The spikes are smaller at lower output currents and probably won’t cause problems in most applications. 10A transients in load current result in 300mV jumps in the output voltage. I have attached scope captures of the noise and the voltage transient.The output has 2000uF of capacitance fed through a current measuring shut by a switching power supply with 3300uF of output capacitor in parallel with a 660 Ohm resistor. Note that turn on voltage ramp will be limited by the current limit and the 2000uF output capacitor in some configurations. Note also that there is no additional circuitry to disconnect the load from the power supply. When the output is turned off by the user or a protection feature, the switching power supply is simply disabled. Thus, if there is no load when the output gets disabled, the output voltage decays like a 660 Ohm resistor in parallel with a 5300uF capacitor over many seconds. The large output capacitance can be a little dangerous if you’re not careful when using the current limit feature. For example, you can use the power supply to light an LED by setting the output voltage to a voltage higher than the LED’s required voltage and setting the current limit to the current you want to drive the LED at. This will work fine if you connect the LED with the power supply disabled and then enable it. However, if you set the voltage much higher than the LED’s working voltage, enable the supply and then connect the LED, the output capacitance will be charged to the high voltage before the LED is connected and will discharge through the LED when it gets connected; the constant current feature can’t limit the resulting current surge. This could damage the LED.
MJL –
Nice little unit
I was using a train transformer to run my diy hot wire foam cutter. It worked OK but I was always breaking wires. It was very inefficient. Never knew the volts, amps or total wattage it was putting out. I did some upgrades on my cutter and bought this DC power supply. What a difference. This unit has made my cutter much more efficient and easier to use. I can dial in the total wattage I want and need to make the cutter efficient without breaking wires. I have used Kenthal – A1 26g (which is .016 thick) as well as 170lb 7 strand SS fishing leader wire (which is .010). Both work well. Use the Jacobs-online calculator and it will give you the amps and watts you need. Then you can fine tune it to your needs. Plus you can buy this unit cheaper than most train transformers.
R Race –
Very happy. I cannot believe how inexpensive these are. Responsive service also.
This is a must for your bench if your in to electronics as a hobby. It accurate against my multimeter and oscilloscope. No longer burning stuff out because you can dial in the voltage and current limits. Next project will need a larger one so definitely will get one by these folks when I get to it.Customer service is quick. I used the email on the manual because I thought it stopped working and they replied within a couple hours. They asked me to make a video and when I set up a test I found out one of my leads broke internally so that was on me. Very good and handy product.
Scott –
Current and Voltage are annoying to adjust
Great little power supply, very handy for my little projects. The really annoying part is to change the voltage/current you have to push in the knob to select which digit to change. Other than that it’s been an awesome supply. It’s really small which makes it great for my cluttered desk. I would also recommend picking up some longer leads if you have a bigger desk.
RCAddiction –
Love this thing – accurate, good performance – bonus Watts output!
At first, I did not know whether I’d be happy with setting each voltage digit separately, or with powering the unit with yet another switch for enabling power to the banana jacks.Well, setting the voltage is fast enough, and monitoring current and wattage has been a breeze, thanks to the quite accurate wattage display. (Volts x Amps = watts). Anyhow, the 2nd switch to enable power has already saved me once.I’ve used it primarily to power 24V 3D printer hot ends outside of the printer to address clogs or the inevitable blob of filament encasing the hot end from a print gone horribly wrong. The hot end is powered at 24V while monitoring the temp with the thermocouple connected to my DVM. Once it reached the target temp of 300C, it’s easy to dial back the voltage to 12-14V, as needed, to hold the hot end at the desired temp. It’s also used to power the onboard systems of my giant scale RC aircraft when working on the bench during setup, rather than using the batteries.A really good buy, and nicely made. Recommended.
Remus Dabasol –
Love it. Perfect Space Saver.
Unit looks and works great. Easy to use w/o issues. Love how compact it is. Quiet operation, easy current and voltage adjustment.
Leonardo –
Muito bom o produto
Steve W. –
I have the 120 Volt, 3 Amp, encoder button model. It arrived within a few days, properly packaged and undamaged. Shipping was included in the price. The power supply looks and operates exactly as described.My requirements are for voltages between 0.1 Volts and 120 Volts, and currents below 0.2 Amps most of the time, though rarely 1.5 to 2 Amps is needed. This power supply is one of only a few that have this voltage range, and the 3 Amp current limit is high enough that I’ll seldom be loading it heavily. I’m hopeful that will make it last a long time.I’ve tested it from 10 Volts up to 120 Volts using a load resistor, and the voltage measured with my Fluke DMM was within 0.05 Volts of the number on the power supply throughout this range. I haven’t tested lower voltages yet.The current numbers on the power supply were within 0.002 to 0.004 Amps of the values calculated for the load resistor throughout the test range noted above. Both Voltage and current are well within the promised limits at these light loads.My intended use isn’t sensitive to voltage ripple so I haven’t measured it yet.Be aware that there is a large capacitor across the output + and – terminals, which causes a “soft-start” behaviour when you turn on the output. It can take 10+ seconds to smoothly rise to the set voltage when operating in the upper part of the voltage range (>80Volts). At lower voltages (<30 Volts) it doesn't take as long. This capacitor probably also suppresses voltage spikes when switching the output on and off. This is an unexpected nice feature that wasn't mentioned in the specifications, and you should be aware in case soft start is not compatible with your application.The encoder buttons are very easy to use. Perfect for anyone who has trouble with coarse and fine potentiometer style buttons.Overall I'm very happy so far. If it is long lasting at my light loading, it will be an excellent value.
Toño –
El producto es como lo describió el vendedor, y si me sirve para mà trabajó que es la reparación de celulares
AHF. –
El diseño vertical es muy práctico porque ocupa poco espacio. Es pequeña y fácil de transportar, ya que pesa poco. El display es grande y se ve muy bien. Manejo muy sencillo con prestaciones adicionales interesantes. Las salidas USB y micro USB son prácticas. El botón de interrupción de salida es estupendo, puedes configurar la señal con los cables conectados y no emite señal hasta que se pulsa ese botón. Los botones de ajuste de voltaje y corriente son prácticos, cada vez que se pulsa uno de ellos se selecciona un orden (decenas, unidades, décimas, centésimas,…) y el valor se aumenta o disminuye girándolo. Parece complicado pero resulta cómodo, fácil y rápido. Por ejemplo, si quieres ver el efecto que tiene sobre un circuito el subir o bajar la tensión puedes, con el botón de salida pulsado y seleccionando el segmento de valor de tensión adecuado, hacer que la tensión suba o baje más deprisa o más despacio al girar el botón de voltios. El valor de salida es potente y estable, yo compré la 60v. porque es la que necesitaba para variedad de trabajos. Los cables de salida son muy flojitos, mejor cambiarlos por unos más largos y mejores. Es una compra muy recomendable, calidad precio excelente.
Pixelzähler –
Endlich Mal ein Netzteil was bis 120V= arbeitet, gelegentlich benötige ich Spannungen in diesem Bereich.Die Bedienung stellt einen nicht vor Rätsel, Spannung und Strom lassen sich individuell begrenzen und die Leistungsanzeige ist ein nützliches Extra.Die Spannungen stimmen wirklich sehr exakt, mit präzisem Fluke-Multimeter geprüft.Das i-Tüpfelchen wären noch Speichertasten für z.B. drei oft benötigte Einstellungen, aber das ist bei dem Preis wahrscheinlich nicht mehr drin.Insgesamt ein super Gerät!