Schematic of The Encoded Three-Channel Transmitter and Receiver Composed Of KIA733P and KIA7657P

Published:2011/4/26 9:06:00 Author:TaoXi | Keyword: Encoded, Three-Channel, Transmitter and Receiver | From:SeekIC

By encoding the transmitter circuit, the 3 channels of the receiving circuit can be used in different applications, remote control three kinds of circuits. The coded transmission circuit is shown in Figure (a). The receiving circuit is shown in Figure (b). IC2 is the receiver decoder IC (KIA7657P) which includes two-stage amplifier, automatic adjustment circuit, decoder and three pairs of compound (darlington) driver tube, additionally, it has a 5V power supplier to supply power to the whole circuit. The C14、R8、R9 between 2 pin and 3 pin are amplification gain and automatically adjustment components, Cl5～Cl8 are the amplifier capacitor decoder and filter capacitor decoder. The 9～11 pins of the IC2 export the decoding signal, available in low level, and the sink current can be up to 100mA. This circuit issuitable to control the toy, electric curtain, automatic door, crane and construction crane. Figure 1. Schematic of The Encoded Three-Channel Transmitter and Receiver Composed Of KIA733P and KIA7657P Shown in Table 1.



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