Resistive load:
Refers to pure resistive loads like incandescent lamps, induction cookers, fans, computers, and microwave ovens. A nominal 2000W induction cooker can be driven by a 2000W inverter.
Inductive load:
Includes motors, compressors, and relays. These require 3-7 times more starting current than normal operation. Example: A 150W refrigerator may need 1000W+ to start. Includes refrigerators, washing machines, and air conditioners.
Capacitive load:
Loads with capacitance parameters where voltage lags current. Representative loads include switching power supplies, energy-saving lamps, and electric vehicle charging power supplies.
1. Waveform Quality: Sine wave inverters generate pure AC consistent with grid power. Modified wave inverters have more harmonics and are less smooth.
2. Efficiency & Cost: Modified waves are cost-effective with high conversion efficiency but may generate more heat. Sine wave models are more complex and premium.
3. Application Scope: Sine wave is essential for precision equipment and sensitive household electronics. Modified wave is for general, cost-sensitive use.
4. Impact on Equipment: Sine wave provides high-quality power for medical/laboratory tools. Modified wave may cause high-frequency interference to communication equipment.
❓ Frequently Asked Questions
Q1. Can I have a sample order?
A: Yes, sample orders are acceptable to test and check quality for the first cooperation.
Q2. What about the lead time?
A: Most models are in stock. Sample lead time is 1-3 working days after receiving payment.
Q3. Do you have any MOQ limit?
A: Low MOQ; 5 pieces for sample checking is available.
Q4. How do you ship the goods and how long does it take?
A: We often ship by DHL, UPS, FedEx, or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping are also optional.
Q5. Is it acceptable to print the buyer logo on the product?
A: Yes. Please inform us formally before production and confirm the design based on our sample.
Q6. Do you offer a guarantee for the products?
A: Yes, we offer a 1-year warranty for all power supplies.