Specifications: 1) PCB size: 66*61mm 2) input voltage: DC12V 3) output voltage: 110V/200V/220V/280V (marked on the PCB. Can be set by jumper on board) 4) output wave form: high frequency or DC (unfiltered) square wave 5) output power: rated 150W, max. 200W (when higher than 100W, need to use cooling fan) 6) current with 12V interface (no load): 250mA 7) working frequency: 37kHz 8) onboard chip: SG3525A or KA3525, according to different production batches. 9) FET: RU6099R or DX3205R, according to different production batches. Note: 1) we recommend connecting to the "DC output" because normal electrical units use a normal rectifier. If connected to the "high frequency AC output", the rectifier heats up quickly and damaged, the diode will be destroyed. 2) this board has high square frequency AC output and DC output, so it can't drive inductive electrical appliances (such as motor, fan, capacitor resistor volt step-down units, small LEDs, etc.) 3) when connected to small loads (phone chargers, DVDs, etc.), we recommend connecting to a lower output voltage, such as 200V. 4) when working under heavy load (above 100W) or for a long time, please use a larger heat sink and fan for cooling. 5) Please do not confuse polarity. You need a large enough current for power and a power cable. 6) no overload, no short circuit at the output. 7) when the output is high frequency and there is no load, the test result with multimeter will be higher than the actual one. (此处插入图片 1A30135-00.jpg) Pack of 1pcs*DC-AC Converter 12V to 110V 200V 220V 280V AC 150W Inverter Boost Transformer Board Power