Projection screenmodel: SN150XEV-D

Product features:

Adopting imported tubular motors, it is quiet and smooth, equipped with a thermal protection system to extend its service life.
◆ Choose high-quality imported screens with high gain to provide you with clear and realistic visual enjoyment.
The interactive intelligent electric screen -40Y is equipped with a game launch controller and a remote control light controllerProjection screenRemote control computer operation

Remote control projector switch, remote control demonstration software, laser pointer, interactive games and other functions.
◆ Optional infrared/wireless remote control and intelligent demonstration system -40Y, changing the traditional control mode with just one press.
Suitable for different fields' needs. Such as home theater, game interaction, remote video, etc.

Characteristics of Curtain Materials：

Under certain ambient light conditions, white plastic screen is one of the most functional and uniformly reflective screen materials, suitable for front projection, and can provide unconstrained

Visual perspective and image quality, with precise clarity, especially for the reproduction of black, white, and other colors. The surface of the screen has

Features include washability, moisture resistance, mold resistance, flame retardancy, no odor, and wide viewing angle.

Screen size：

Proportional specifications (inches) Projection size (mm) Screen total length (mm) Screen total height (mm) Weight (kg)

4:3---- 72 ------------1460x1090 -----------1728 -----------------1297 -------------12.2

4:3 ----84 ------------1700x1280 ------------1968---------------- 148 -------------12.6

4:3 ----100 ----------2030x1520------------- 2318---------------- 1737----------- 15.1

4:3 -----120----------2440x1830-------------- 2718 --------------2037 -----------18.3

4:3------ 150- --------2890x2170------- -------3218 -----------2407------------- 21.9

New energy battery comprehensive characteristic tester Battery comprehensive characteristic tester Model: HAD-DH-FUC

Feasible experiments

1. Understand the working principle of solar cells.
2. Measure the volt ampere characteristic curve, open circuit voltage, short-circuit current, maximum output power, fill factor and other characteristic parameters of solar cells.
3. Understand the working principle of proton exchange membrane electrolysis cell (PEMWE).
4. Understand the working principle of proton exchange membrane fuel cells (PEMFCs).
5. Measure the volt ampere characteristic curve, open circuit voltage, short-circuit current, maximum output power, and conversion efficiency of fuel cells.
6. Observing the process of energy conversion: light energy → solar cells → electrical energy → electrolytic cells → hydrogen energy → fuel cells → electrical energy
Main technical parameters
1. Fuel cell power: 50-100mW.
2. Fuel cell output voltage: 500-1000mV.
3. Working status of electrolytic cell: Voltage:< 2.5V current:< 500mA.
4. Solar cell parameters: 18V/5W, short-circuit current 0.3A.
5. Light source power: 300W, adjustable position up and down, changing light intensity.
6. Current source output: constant current: 0-400mA, three and a half digit digital display.
7. Ammeter: Two levels of 2A and 200mA, three and a half digit digital display.
8. Voltage meter: Two levels of 20V and 2V, three and a half digit digital display.
9. Variable power resistor load: 0-9999.9 Ω.
10. Users need to bring their own deionized water or distilled water.