I’m quite impressed with this inverter and the design of it. Here are some of my observations from it:
The fuse holder and 5-15R receptacles have PCBs on the back of the terminations to connect to wire instead of soldering the wires directly to the connectors, a very nice touch! The ground is bonded to battery negative and the chassis, but the neutral isn’t bonded to ground (more on this later). On the PCB they use silastic to secure the LC filter to the PCB so it’s not rattling around. The FETs and diodes in the inverter use actual heat sinks instead of being thermally bonded to the chassis, which is very good, this keeps the chassis cool while still cooling the components. Verified the output waveform on a oscilloscope and its a 60 hertz sine wave with minimal voltage ripple on the output so the low pass filter is designed well. The input and output capacitors are 105C rated, and the high and low voltage circuits on the PCB are isolated with isolation slots cut on the PCB, all in all a very well designed inverter and decent quality. I did find a few improvements they could’ve done as well, one thing is they could make the fan thermally controlled so it only turns on when the inverter heats up, as is it runs constantly and never turns off. Another suggestion is to make the inverter 120V single phase instead of 120V split phase (for the uninitiated this means use 1 120V rail instead of 2 60V rails that are 180 degrees out of phase). Also I would like to see higher voltage rated input capacitors, the ones on the input DC bus are only 16V rated, which a car alternator can easily exceed in low temperatures, I would like to see 25V rated capacitors used instead. I’m quite happy with this product and wish more of the affordable inverters on the market would design their products to these standards. Great job Bestek!
| Item Weight | 2.33 pounds |
|---|---|
| Package Dimensions | 10.08 x 6.14 x 2.8 inches |
