In the imported electronic equipment, a circuit for supplying power to the operational amplifier integrated block using the positive and negative power sources as shown in the figure can be often seen. Its characteristics are: 1. It is very convenient to make or select the power transformer, and the secondary winding of the transformer does not need to have a center tap. 2. The positive and negative power supply voltages are symmetrical. 3. The utilization rate of electric energy is high. 4. The structure is simple. Practice has proved that under the premise of sufficient power capacity of the power transformer, the capacitor capacity and the secondary winding diameter of the transformer are appropriately increased. The circuit can also be used for the power amplifier of a small power for positive and negative symmetrical dual power supply.
OTG USB Flash Drive is one serial of USB flash drive,which is hot selling right now and widely used on different mobiles,including Iphone and all smart phones which can support OTG function.More and more people choose it since it is quite small and very easy to take with.
There are mainly 4 kinds of OTG USB flash drive as below:
1. 2 IN 1 USB flash drive with micro(or Android)
2. 2 IN 1 USB flash drive with type C.
3.2 IN 1 USB flash drive with lighting for Iphone.
4.3 IN 1 OR 4 IN 1 USB flash drive with lightning/micro/USB C.
Most OTG USB flash drives start with 8GB until 256GB.You may also look for 1TB 2TB OTG USB memory stick but you will find the 1TB 2TB OTG USB flash drive you bought not working soon when you want to save more and more files,or even some files are missing.Why? Because they are not real full capacity!
We only do real full capacity as promised,and no upgrade or fake capacity from us.
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