Founded in 2007, Zhejiang Weihao Electronics Co., Ltd. has long been committed to the research and development, production, and sales of new energy products such as switching power supplies and LED drivers. Our logo “WeHo” can be divided into “we” and “Ho”. “We” stands for “You” and “Us”, “Ho” means “Best” in Chinese, “WEHO” – let’s build the best world! It can also be extended to “be honest/good honor”. The combination means “always honest, honored to serve you”. Red is the basic color of WEHO, symbolizing leap, enthusiasm, brilliance, and strength.
Is WEHO manufacturer or trading company ?
WEHO is manufacturer of power supply for 15 years , from 10w to 3000w .
How Many voltage of output WEHO can supply ?
3V 5V 9V 12V 13.8V 15V 18V 24V 27V 36V 48V 60V 70V 72V 90V 110V And so on .
How many the current WEHO can supply ?
From 0.5A to 125A (Max power to 3000w )
What is minimum load requirement and how can I read it from the spec?
There are some minimum-load requirements on WEHO’s multi-output power supplies. Please read the specification first before connecting to the load. In order to allow the power supply to work properly, a minimum load for each output is required, or else, the output voltage level will be unstable or outer tolerance range. Please refer to “Current range” in the specification as shown in the table below: Channel 1 requires a 2A minimum-load; channel 2 requires 0.5A; Channel 3 requires 0.1A ; Channel 4 does not need any minimum-load.
Why did the power supply shuts down during operation and after turning it off, I can restart the power supply again?
In general there are two circumstances that will cause the power supply to shut down. The first one is the activation of the over-load-protection (OLP). To deal with this situation, we suggest increasing the rating of the output power or modifying the OLP point. The second one is the activation of over-temperature protection (OTP) when the internal temperature reaches the pre-set value. All of these conditions will let the S.P.S. enter protection mode and shut down. After these conditions are removed, the S.P.S. will be back to normal.
What is "Inrush Current"? What will we notice?
At input side, there will be (1/2 ~1 cycle, ex. 1/120 ~ 1/60 seconds for 60 Hz AC source) large pulse current (20~100A based on the design of S.P.S.) at the moment of power on and then back to normal rating. This “Inrush Current” will appear every time you turn on the power. Although it will not damage the power supply, we suggest not turning the power supply ON/OFF very quickly within a short time. Besides, if there are several power supplies turning on at the same time, the dispatching system of AC source may shut off and go into protection mode because of the huge inrush current. It is suggested that these power supplies start up one by one or use the remote control function of S.P.S. to turn them on/off.