_ Plastic infrared receiver infrared receiver infrared receiver design _ _ certified enterprise Cheng Coretronic 
 After years of development, honesty strong optical field of business and corporate structure in terms of active exploration and self-improvement, forming a tight, efficient production, sales, service, research and development organization system and cartels. Excellent product quality, professional sales personnel, and improve after-sales service team is our solid foundation. After years of hard work, "CHQ" brand infrared receiver have been sold throughout the country, through training staff and creating the working environment of solidarity, encouraging the innovative capacity of breeds portrait professional, dedicated, cooperative and efficient elite team. We know that stable, reliable products is the basis for success, correct marketing approach is a guarantee of success in the future we will continue to uphold the "buy happy, must be assured" service commitment, to provide our partners to provide high-quality low-cost advantages infrared receiver products, services and application solutions and technical support. Change the rules of the market is always changing, we always changes according to constantly improve the target market, and constantly adjust their position in a rapidly changing market and strive to gain the initiative. 
 Household appliances with a remote control infrared receiver used in the range of the first models, maintenance models often encountered can not buy the original case of the infrared receiver, only to find substitution products. In fact no matter what type of infrared receiver can be substituted with common models. Substitution should note the following when the main points: 
 1. Mounting dimensions. Such as the large size of the original infrared receiver, you can easily use any size equivalent substitution models can also be models with smaller substitution. There looks like a miniature plastic transistor infrared receiver for the maintenance of substitution is very convenient. 
 2. Pin order. Remote control infrared receiver pin order of the following categories: (received from the left side) ①, the signal output, power supply; ② signal output, ground, power supply; ③, the power supply, signal output, such as several forms of substitution when should be carefully distinguished. For the pin in the same order in order to access directly, such as the pin order does not, you can use thin wire connection of. Note that the power cord ground must not be reversed, otherwise the damage immediately after power receiver. 
 3. Center frequency of the infrared receiver and remote transmitter should be the same frequency. Most of the infrared receiver demodulator center frequency of 38KHz, but there are some infrared receiver center frequency is 36KHz, 37KHz, 39KHz, 44KHz, if the transmitting frequency and receiving frequency is far 1KHz, most can be a normal remote control, a difference of more than appears remote 2KHz ineffective phenomenon, this time by replacing the remote control transmitter crystal oscillator to resolve. Common to 455KHz oscillator (corresponding to the transmission frequency 38KHz), other 429KHz, 432KHz, 445KHz, 465KHz, 480KHz and other types of crystal, corresponding to the emission frequencies of 36KHz, 36KHz, 37KHz, 39KHz, 40KHz. 
 4. Signal polarity. Most of the remote control infrared receiver output signal polarity is negative, that is, the output when no signal is high potential (usually 4.8 ~ 5.0V), receives the signal output voltage drop. But a few receiver output signal is positive polarity, if the receiver directly with the common models of substitution, you can not remote control, for such a situation can increase the signal output connected inverter solution. 


 Product Type: CHQ-T14 
 Dimensions: 8.3 * 6.8 * 13.9mm (L * W * H) 
 Category: Infrared receiver 
 Products: 1, using internal and external dual-shield structure; 
 2, high sensitivity, anti-jamming; 
 3, wide angle and long distance reception; 
 4-line shape of the structure, welding and convenient; 
 Application: 1, audio-visual products: stereo, TV, video recorders, disc players, set-top boxes; 
 2, household appliances: air conditioners, heaters, fans, lamps, etc.; 
 3, infrared remote control receiver toys