{"product_id":"dc-power-supply-variable-bench-power-supply-with-encoder-knob","title":"DC Power Supply Variable Bench Power Supply with Encoder Knob","description":"\u003cp\u003eIn this review of the DC Power Supply Variable bench unit, the bottom line is simple: it is a compact, accurate option for hobbyists and small labs who need precise voltage and current control without a large footprint. The standout feature is the high-precision \u003cstrong\u003eencoder knob\u003c\/strong\u003e that allows numeric digit-by-digit setting for voltages and currents, making repeatable adjustments far easier than with a conventional rotary knob. The unit also adds practical touches such as an output enable\/disable button, an 18W \u003cstrong\u003eUSB fast charging\u003c\/strong\u003e port and an audible short circuit alarm, which together make it a useful bench companion.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-precision Encoder Knob:\u003c\/strong\u003e The encoder knob lets you press to select a digit and turn to change each digit 0-9, giving highly repeatable and accurate setpoints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Enable\/Disable Button:\u003c\/strong\u003e A dedicated output button prevents accidental powering of a load and makes it quick to toggle the output without changing settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvercurrent Protection with Alarm:\u003c\/strong\u003e Built-in OCP will stop output and sound a buzzer if a short or overcurrent is detected, protecting both the supply and the device under test.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise 4-digit LED Display:\u003c\/strong\u003e The high-definition display shows readings to 0.01 V and 0.001 A and indicates CV or CC mode while offering adjustable brightness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Fast Charging Port:\u003c\/strong\u003e An 18W fast charge output provides convenient charging for phones or small devices while you work on electronics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and Lightweight:\u003c\/strong\u003e At roughly 7.51 x 3.56 x 5.81 in and about 1.15 kg, it saves bench space and is easy to carry between workstations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe DC power supply is aimed at electronics hobbyists, repair technicians, and small laboratory users who need accurate, repeatable voltage and current settings in a portable package. The precise encoder and 4-digit display make it useful for tasks that require fine adjustment like sensor calibration, module testing, or bench repairs.\u003c\/p\u003e\u003cp\u003eThose who need very high output power, multiple channels, or industrial-grade ruggedness should look elsewhere; this model is best for single-channel, low- to medium-power work and everyday bench tasks rather than heavy industrial use.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAccurate numeric adjustment via the encoder knob for repeatable setpoints.\u003c\/li\u003e\n\u003cli\u003ePractical safety and convenience features including an output enable button and OCP short circuit alarm.\u003c\/li\u003e\n\u003cli\u003eCompact size and built-in 18W USB fast charging make it a versatile bench companion.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBuild quality receives mixed feedback; some users notice cheaper materials compared with higher-end supplies.\u003c\/li\u003e\n\u003cli\u003eNot suited for high-power or multi-channel applications where greater output or isolation is required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Type\u003c\/td\u003e\n\u003ctd\u003eSingle-channel bench DC power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Output\u003c\/td\u003e\n\u003ctd\u003e30 V, 5 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003ePrecise 4-digit LED, 0.01 V \/ 0.001 A resolution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControls\u003c\/td\u003e\n\u003ctd\u003eHigh-precision encoder knob and output enable\/disable button\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOvercurrent protection (OCP) with buzzer alarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB Port\u003c\/td\u003e\n\u003ctd\u003e18W fast charging output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions \u0026amp; Weight\u003c\/td\u003e\n\u003ctd\u003e7.51 x 3.56 x 5.81 in, 1.15 kg (approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eFor hobbyists and small lab users who want a compact, accurate single-channel DC supply, this unit delivers strong value thanks to its numeric \u003cstrong\u003eencoder adjustment\u003c\/strong\u003e, clear 4-digit display, and helpful safety features. It is not a replacement for a high-end or multi-channel laboratory supply, but for everyday bench work and portable use it is a practical, cost-effective choice.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDoes it protect against shorts?\u003c\/strong\u003e\u003cbr\u003eYes. When OCP is enabled the supply will stop output and sound a buzzer if an overcurrent or short occurs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I charge a phone from it?\u003c\/strong\u003e\u003cbr\u003eYes. The unit includes an 18W USB fast charging port suitable for charging phones and small devices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it work on 110V mains?\u003c\/strong\u003e\u003cbr\u003eIt supports AC 230V\/115V; if your area uses 110V you must flip the voltage switch on the rear to 115V for full output performance.\u003c\/p\u003e","brand":"NANKADF","offers":[{"title":"Default Title","offer_id":48644828332251,"sku":"B09BFDZ85C","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71cwXBgBi3L._AC_SL1500.jpg?v=1778562449","url":"https:\/\/gearmusthave.com\/products\/dc-power-supply-variable-bench-power-supply-with-encoder-knob","provider":"GearMustHave","version":"1.0","type":"link"}