1) Voice coil number = DC resistance × 1000000 ÷ 3.14 ÷ (voice coil inner diameter) ÷ line diameter impedance
2) Voice coil volume = number of turns × maximum outer diameter of the wire diameter ÷ voice coil layer + (coefficient × wire diameter maximum outer diameter)
(When the wire diameter is copper wire, the coefficient is 1.5 times; when the wire diameter is CCAW, the coefficient is 1.2)
3) Maximum outer diameter of voice coil = maximum outer diameter of wire diameter × 2 × number of voice coil layers + 2 × BOBBIN thickness + voice coil inner diameter + coefficient
(When the layer is less than or equal to the second layer, the coefficient is 0.1; greater than the second layer, the coefficient is 0)
4) Voice coil winding weight = DC resistance × 1000 ÷ wire diameter impedance × wire diameter specific gravity (unit: gram)
5) The calculation formula of the flat line is the same as the above formula, but the change is: there are some differences between the calculation of the web width and the maximum outer diameter as the flat line is vertical or flat, as follows:
When A is winding:
1) voice coil volume = number of turns × maximum diameter of the flat wire thickness diameter ÷ voice coil layer
2) Maximum outer diameter of voice coil = maximum outer diameter of flat line width diameter × 2 × voice coil layer + 2 × BOBBIN thickness + voice coil inner diameter
When B is flat:
1) voice coil volume = number of turns × maximum outer diameter of the flat line width diameter
(When the wire diameter is copper wire, the coefficient is 1.5; when the wire diameter is CCAM, the coefficient is 1.2)
2) Maximum outer diameter of voice coil = maximum outer diameter of flat wire thickness diameter × 2 × voice coil layer + 2 × BOBBIN thickness + voice coil inner diameter + 0.1
6) Calculation formula of voice coil BOBBIN weight:
BOBBIN weight = BOBBIN length × BOBBIN height × BOBBIN thickness ÷ 1000 × BOBBIN specific gravity (unit: gram)
7) The weight of the reinforcing paper is calculated in the same way as the BOBBIN weight.
In the above formula:
The wire diameter impedance, the wire diameter specific gravity, the maximum outer diameter of the wire diameter, and the BOBBIN specific gravity are all referred to the relevant schedule.
Example: The voice coil specification is: 25.4×22×3.6×0.19×ASV/0.07 second floor
Number of turns = 3.6 × 1000000 ÷ 3.14 ÷ 25.4 ÷ 640.6 = 70.5
Coil = 70.5 × 0.221 ÷ 2+0.221 × 1.5 = 8.1
Outer diameter = 0.221 × 2 × 2 + 2 × 0.07 + 25.4 + 0.1
Line weight = 3.6 × 1000 ÷ 640.6 × 0.26 = 1.46
BOBBIN weight = 25.4 × 3.14 × 22 × 0.07 ÷ 1000 × 2.73 = 0.34
Internet changes our life,more and more people start to live streaming with thier phones,they use their phones to start a live show,fans interaction,sell their products,but the mobile screen is very small,they can not see clearly,so the big screen for live streaming comes out.Our Live Streaming Equipment allows you to project your screen,android and iPhone both available,wired and wireless both works very well,you can place your phone away,and put all your concentration into the big lcd screen,which makes it easier.and aslo you can take this screen as a phone battery charge kiosk,never out of power.4K HD images,USB connect,no need to use the 3rd party apps,voice output sync,loudspeakers,plug and use.Most important,we have a lot of sizes available for different requirements,from 18.5" to 75",satisfy all level needs.
Lcd Screen Digital Live Streaming Equipment,Live Streaming Projection Screen Mobile,Mobile Live Streaming Equipment,Lcd Touch Screen Equipment
Shenzhen Jumei Video Co.,Ltd , https://www.jmsxdisplay.com