Buck-Boost
Buck boost Power Converter 8V-40V to 13.8V 15A Dc Voltage Regulator
- Input Range8V – 40V DC
- Output Rating13.8V DC / 15A (207W)
- EfficiencyUp to 95%
- ProtectionOver-current, Thermal
23+
Years In Power Electronics
10+
Dedicated Production Lines
100%
Full Burn-in Aging Tested
3C3
Tropicalized PCB Protection
Precision Conversion Equipment
High-Efficiency Inverters & Voltage Stabilizers for Pakse Industrial Plants
Built with robust thermal dissipation, conformal-coated PCBs, and intelligent surge tolerance to survive voltage sags and extreme tropical humidity across Champasak Province.
Pure Sine
Portable Car Inverter 300W 12V 24V 48V to 110V 220V Pure Sine Wave DC to AC Power Inverter for Car Home Use
- Rated Power300W (Surge 600W)
- DC Input12V / 24V / 48V
- AC Output110V / 220V Pure Sine
- Distortion (THD)< 3% Linear Load
IP67 Waterproof
Usb Type Waterproof IP67 12/24V to 5v 5A 25W Ac Dc Converter Plastic Shell
- EnclosureFlame-retardant Plastic
- Ingress RatingIP67 Hermetic Potted
- Input Voltage12V / 24V Auto-detect
- Output5V DC / 5A USB Step-Down
DC-DC Buck
Buck Converter DC-DC 8-35V 12v to 7v 5A Step Down Power Supply Module
- Input Span8V – 35V DC Nominal
- Regulated Output7V DC ±1.5%
- Continuous Amps5.0A High Stability
- Ripple & Noise< 40mVp-p
Heavy Inverter
600W 1000W 1500W 2000W 3000W 4000W 5000W Hot Sale Dc to Ac Power Inverter
- Capacity Span600W up to 5000W Heavy Load
- TopologyHigh-Frequency Pure Sine
- System DC12V / 24V / 48V Config
- CoolingDynamic Thermostatic Fans
YUCOO Series
YUCOO 12v to 5v Converter Buck Module Usb Output Adapter Dc Car Power Converter
- Input Voltage9V – 22V DC
- Port ConfigurationSingle / Dual USB Output
- Conversion RateSynchronous Rectification >93%
- EnclosureEpoxy Sealed, Anti-vibration
Solid State
YUCOO Power Voltage Converter DC 18V to 6V 5A 30W Waterproof Voltage Converter Transformer
- Rated Power30W Continuous Capacity
- Input Rating18V Nominal (11V – 28V)
- Output Spec6V DC Regulated / 5A
- HousingDie-Cast Aluminum Heat-sink
Solar Hybrid
Inversor 300W 500W 1000W 2000W 2500W 3000w 5000W Pure Sine Wave Power Inverter 12V 24V 48V to 110V 220V Dc to Ac Solar Inverter
- Inverter Range300W to 5000W Scalable
- Solar CompatibilityPWM / MPPT Dual Charging
- AC WaveformLow-distortion Pure Sine
- DisplayMulti-parameter LED / LCD
Industrial Field Engineering Whitepaper
Optimizing Variable Frequency Drives for Southern Laos & The Greater Mekong Subregion
Pakse serves as the economic hub of Champasak Province, connecting cross-border industrial corridors with Thailand, Cambodia, and Vietnam. Deploying motor control drives in this region requires specific engineering adaptations.
Grid Volatility & Brownout Protection
The industrial electric distribution network across Pakse and neighboring districts along Route 13 South frequently experiences line voltage drops exceeding ±18% during peak monsoon irrigation periods and heavy industrial shifts. Standard international VFDs trip unexpectedly on under-voltage (UV) faults.
Our China-engineered VFD architectures integrate ultra-wide input margins (380V -25% to +20%) with kinetic buffering capabilities. When an instantaneous grid sag occurs, the drive absorbs back-EMF kinetic energy from motor inertia to keep critical control loops energized without stalling factory processing.
Kinetic Energy Ride-Through (KEB) Enabled
Tropical De-Rating & Thermal Physics
Ambient temperatures in the lowlands of Pakse routinely peak above 40°C in April and May, coinciding with relative humidity levels exceeding 90% during the monsoon season. Inverter electronics operating under these conditions undergo severe thermal runaway if not properly oversized.
We deploy oversized IGBT modules (Infineon and Mitsubishi silicon) paired with forced independent-duct cooling layouts. Control logic electronics are completely isolated from cooling air channels to prevent dust, agricultural particulate matter, and conductive moisture accumulation on critical circuit traces.
50°C Non-Derating Continuous Operation
Conformal Coating Class 3C3 Resilience
Agricultural processing plants on the Bolaven Plateau (e.g., wet coffee processing mills, starch refining) discharge airborne sulfur compounds, chemical washing vapors, and high moisture mists that corrode standard copper traces within 6 to 12 months.
All VFD inverter control boards manufactured for Pakse wholesale distribution undergo robotic automated three-layer polyurethane conformal spray coating adhering to IEC 60721-3-3 Class 3C3 standards, providing chemical, fungus, and salt-mist resistance for 10+ years of continuous service.
Certified IEC 60721-3-3 Class 3C3 Immunity
Regional Industrial Deployment
High-Torque Drive Applications in Pakse & Champasak Industry
From coffee processing on the Bolaven Plateau to mechanized river pumping along the Mekong, precision motor regulation delivers measurable operational savings.
Bolaven Plateau Coffee Processing Mills
Southern Laos is internationally recognized for premium Arabica and Robusta production. Large-scale wet processing facilities around Paksong and Pakse require stable motor speeds for drum pulpers, destoners, and optical grading separators. Fluctuating belt drives cause bean breakage and lower bean export grading.
Our Sensorless Vector Control (SVC) inverters deliver 150% rated starting torque at 0.5 Hz, preventing bean jamming on heavy hopper restarts while slashing peak energy demand by 28% compared to direct-on-line (DOL) contactors.
180% Peak Starting Torque at 0.5Hz
Cassava (Tapioca) Starch Mills & Wood Processing
Industrial tapioca production in Champasak operates high-inertia rasper drums, centrifuge decanters, and flash drying blowers. Sudden material feed surges cause extreme load spikes that frequently trip thermal overloads on older motor setups.
By implementing dynamic current-limiting algorithms, our variable speed controllers automatically cap motor stall conditions without shutting down the processing line. Integrated DC braking chokes enable smooth ramp-down cycles on heavy centrifuges in under 15 seconds.
Rapid Dynamic Braking & Auto-Stall Suppression
Mekong & Xe Don River Lift Irrigation Pumps
Agricultural irrigation projects along the Mekong River basin require multi-stage vertical turbine pumps operating across variable river elevations. Fixed-speed motor systems waste massive electrical energy when pumping against low head pressures.
Our specialized multi-pump constant pressure VFDs feature built-in sleep/wake macros, dry-run protection, and water hammer suppression. One drive controls up to four auxiliary pumps via soft-starter sequencing, ensuring zero pipeline bursts and up to 42% electrical savings.
Smart Constant-Pressure Multi-Pump Firmware
Technical Whitepaper Specifications
Industrial Drive Selection Matrix for Pakse Industrial Operations
| Series & Target Load | Input Voltage / Frequency | Control Mode | Overload Tolerance | Harmonic / EMC Compliance | Stock & Delivery to Pakse |
|---|---|---|---|---|---|
| VX-500 Heavy Vector Series Coffee pulpers, crushers, mining conveyors |
3-Phase 380V–480V (-20% / +15%) 50/60Hz ±5% |
Sensorless Vector (SVC), Closed-Loop FOC, V/F | 150% for 60s, 180% for 3s Peak 200% starting torque |
Built-in C3 EMC Filter Optional DC Choke (THDi < 35%) |
Kunming Rail 3-5 Days |
| VX-300 Pump & Fan Series Mekong irrigation, ventilation, drying blowers |
3-Phase 380V–415V (-25% / +15%) 50/60Hz |
Quadratic V/F, Multi-point V/F, Energy-saving SVC | 120% for 60s, 140% for 2s | Integrated PID with Sleep/Wake IEC 61800-3 Category C2/C3 |
Ready Ex-Stock |
| VX-Mini Compact Series Packaging machinery, labeling, small conveyors |
1-Phase 220V / 3-Phase 220V/380V 50/60Hz |
Space Vector PWM (SVPWM), Simple Vector | 150% for 60s | Compact DIN-rail mounting Modbus-RTU RS485 on-board |
Direct Express 48h |
| VX-Solar Hybrid Drive Series Off-grid solar irrigation, remote estate pumps |
DC 250V–800V PV String Input Auto-switch to AC Grid/Gen-set |
High-speed dynamic MPPT (99.2% tracking) | 110% continuous, 150% surge | Zero-battery direct pump drive Dry-run sensorless logic |
Project Batch Ready |
Manufacturer Credentials
Why Southeast Asian Contractors Direct-Source From Varnix
Founded in 2003 in Guangdong, China, Varnix Technology Co., Ltd. operates 10+ advanced assembly lines delivering tested, verified power conversion equipment directly to regional contractors in Laos, Thailand, and Vietnam.
23-Year Power Electronics Lineage
Continuous R&D since 2003 specializing in high-frequency switching, pure sine wave power inverters, and heavy-duty variable speed electronics with an international customer rating of 4.7/5 across global industrial projects.
SGS Onsite Audited Facility
Our 1,229 m² production and testing center is independently audited and certified by SGS Group. Certified quality management compliant with ISO 9001:2015, CE, RoHS, and FCC directives.
100% Elevated Burn-In Aging
Every single variable frequency drive and high-power inverter passes through a 48-hour high-temperature full-load dynamic aging chamber before packing, eliminating infant mortality failures in the field.
Optimized Logistics Corridor to Pakse
Leveraging direct intermodal transit via the China-Laos Railway (Kunming to Vientiane) and express trucking down Route 13 South to Pakse, eliminating multi-week sea freight delays and minimizing customs clearance time.
Complete OEM/ODM & Firmware Tuning
Custom input/output voltage configurations, custom Modbus register mapping, customized bilingual operator keypads (English/Lao), and specialized parameter templates for local factory equipment.
24/7 Dedicated Electrical Engineering Desk
Our senior application engineers provide remote circuit design reviews, motor parameter tuning guidance, and field troubleshooting with an average verified response time under 1.8 hours.
Procurement & Engineering FAQ
Frequently Asked Questions by Industrial Buyers in Pakse
Detailed technical, logistical, and commercial answers for plant engineers, OEM system integrators, and electrical wholesalers across Southern Laos.
How do your VFDs withstand frequent voltage sags and surges in Champasak Province?
Pakse industrial zones connected to the southern transmission network encounter sudden voltage drops down to 310V AC during heavy irrigation seasons and inductive motor startup surges. Our industrial variable frequency drives feature an ultra-wide permissible input window rated from 304V to 456V AC (-20% to +15% of nominal 380V). Additionally, the DC bus incorporates heavy-duty Japanese aluminum electrolytic capacitors (Nichicon/Rubycon) with elevated voltage headroom, paired with our proprietary Kinetic Energy Ride-Through (KEB) firmware that absorbs mechanical inertia during brownouts to prevent instantaneous trip-outs.
What is the fastest shipping route and delivery lead time from China to Pakse?
We utilize the expedited China-Laos overland corridor. For urgent spare parts and small drive batches, goods are dispatched via express air/road through Kunming to Vang Tao / Pakse within 3 to 5 business days. For containerized factory procurement and bulk distributor shipments, cargo moves via the China-Laos Railway directly into the Vientiane South logistics yard, transshipping via express cross-dock trucking down Route 13 South to Pakse within 7 to 9 days total transit time—far faster than sea freight routed through Bangkok or Da Nang.
Can your inverters interface with existing PLC automation networks (Modbus, Profibus, CANopen)?
Yes. All our industrial vector drives come standard with an isolated RS-485 serial communication port supporting the Modbus-RTU protocol at baud rates up to 115,200 bps. For automated coffee mills or starch packaging lines utilizing centralized PLCs (Siemens, Mitsubishi, Delta, or Omron), optional snap-in expansion communication cards are available for Profibus-DP, CANopen, Ethernet/IP, and Modbus-TCP. Parameter registers are open and mapped clearly in comprehensive engineering manuals.
What warranty and spare parts replacement guarantees are provided for projects in Laos?
We provide a formal 18-month factory warranty on all industrial-grade variable frequency drives, backed by contractual replacement terms. For wholesale distribution partners and large industrial accounts in Pakse, we provide modular spare parts kits comprising spare control boards (CPU cards), IGBT power bricks, and cooling fans. If a verified failure occurs, field replacement can be executed within 30 minutes without removing the entire enclosure from the motor control center (MCC) cabinet.
Do you manufacture Solar-to-Grid Hybrid VFDs for agricultural irrigation along the Mekong?
Yes. Our VX-Solar drive series is specifically engineered for off-grid and weak-grid agricultural pumping. It features built-in dual-input terminals that accept both DC photovoltaic string power and 3-phase AC generator/grid power simultaneously. The internal MPPT algorithm tracks solar radiation changes with 99% accuracy. When solar irradiance declines in the late afternoon, the drive seamlessly blends AC grid power without interrupting water delivery to rice, coffee, or cassava plantations.
What Minimum Order Quantities (MOQ) and private-label OEM terms are available?
Standard catalog inverters, pure sine wave power inverters, and DC-DC converters have an MOQ starting at just 1 to 5 units for sample testing and pilot plant verification. Custom OEM private labeling (including client-branded front facias, customized firmware boot screens, tailored packaging, and custom rated voltage profiles) starts at 50 units. We provide complete technical data sheets, CE/RoHS compliance declarations, and customs documentation tailored for import into the Lao PDR.