This receiver uses electronic technology with the concept of collective line between integrated circuits (I2C bus). The system has control functions and replaces some controls mechanics Instead of adjusting the mechanical controls individually, now many of the functions will be adjusted to through the on-screen menu. (service mode).
The adjustment of this control is important for the due operation of user controls for brightness and image. Do not adjust the variable screen resistor (SCREEN) located on the flyback, until the sub-brightness is adjusted. This control is preset at the factory. It should not be adjusted unless associated circuits have been repaired, the CRT card or when the CRT is replaced.
Other data sheets within the file : CTF2125LN, CT-F2125N, CTF2125N
Sensitive material of MQ135 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.
Resistance value of MQ-135 is difference to various kinds and various concentration gases. So,When using this components, sensitivity adjustment is very necessary. we recommend that you calibrate the detector for 100ppm NH3 or 50ppm Alcohol concentration in air and use value of Load resistancethat( RL) about 20 KΩ (10KΩ to 47 KΩ ). When accurately measuring, the proper alarm point for the gas detector should be determined after considering the temperature and humidity influence.
1. Wide detecting scope
2. Fast response and High sensitivity
3. Stable and long life
4. Simple drive circuit
They are used in air quality control equipments for buildings/offices, are suitable for detecting of NH3,NOx, alcohol, Benzene, smoke,CO2 ,etc