26-02-2013, 02:35 PM
SYSTEM OF AUTOMATION
[attachment=51914]
Abstract:
The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. Fig. 1 shows the circuit of the IR music transmitter. It uses popular melody generator IC UM66 (IC1) that can continuously generate musical tones. The output of IC1 is fed to the IR driver stage (built across the transistors T1 and T2) to get the maximum r.
Introduction:
With this module, which was designed by our friend Alain Gailland, you will be able to make the communication among your PC and other devices that have infrared connection - also called IrDA – such as palmtops, notebooks and cellular phones. But to do so your motherboard has to have this interface. To know whether or not your motherboard has this interface, you should look for a connector called IR, IRDA, IRCON, SIR, SIRCON or something like that in its manual or in the motherboard itself. This connector usually has 4 or 5 pins and you will need the manual to know the meaning of each pin (+5V, GND, TX and RX), because the function of each pin will vary depending on the motherboard model.
On Figures 2 and 3 we give as an example parts of ASUS A7N8X De Luxe motherboard manual. You will usually find the IR header on the motherboard layout page (Figure 2). We've drawn a red arrow for you to see it. On this motherboard this header was labeled "IR_CON1".
Using this circuit, audio musical notes canbegenerated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. Fig. 1 shows the circuit of the IR music transmitter. It uses popular melody generator IC UM66 (IC1) that can continuously generate musical tones. The output of IC1 is fed to the IR driver stage (built across the transistors T1 and T2) to get the maximum range. Here the red LED (LED1) flickers according to the musical tones generated by UM66 IC, indicating modulation. IR LED2 and LED3 are infrared transmitting LEDs. For maximum sound transmission these should be oriented towards IR phototransistor L14F1 (T3).
Description of circuit diagram:
The IR music receiver uses popular op-amp IC µA741 and audio-frequency amplifier IC LM386 along with phototransistor L14F1 and some discrete components The melody generated by IC UM66 is transmitted through IR LEDs, received by phototransistor T3 and fed to pin 2 of IC µA741 (IC2). Its gain can be varied using potmeter VR1. The output of IC µA741 is fed to IC LM386 (IC3) via capacitor C5 and potmeter VR2. The melody produced is heard through the receiver’s loudspeaker. Potmeter VR2 is used to control the volume of loudspeaker LS1(8ohm, 1W). Switching off the power supply stops melody generation.brightness
Conclusion:
Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music transmitter and receiver.
[attachment=51914]
Abstract:
The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. Fig. 1 shows the circuit of the IR music transmitter. It uses popular melody generator IC UM66 (IC1) that can continuously generate musical tones. The output of IC1 is fed to the IR driver stage (built across the transistors T1 and T2) to get the maximum r.
Introduction:
With this module, which was designed by our friend Alain Gailland, you will be able to make the communication among your PC and other devices that have infrared connection - also called IrDA – such as palmtops, notebooks and cellular phones. But to do so your motherboard has to have this interface. To know whether or not your motherboard has this interface, you should look for a connector called IR, IRDA, IRCON, SIR, SIRCON or something like that in its manual or in the motherboard itself. This connector usually has 4 or 5 pins and you will need the manual to know the meaning of each pin (+5V, GND, TX and RX), because the function of each pin will vary depending on the motherboard model.
On Figures 2 and 3 we give as an example parts of ASUS A7N8X De Luxe motherboard manual. You will usually find the IR header on the motherboard layout page (Figure 2). We've drawn a red arrow for you to see it. On this motherboard this header was labeled "IR_CON1".
Using this circuit, audio musical notes canbegenerated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. Fig. 1 shows the circuit of the IR music transmitter. It uses popular melody generator IC UM66 (IC1) that can continuously generate musical tones. The output of IC1 is fed to the IR driver stage (built across the transistors T1 and T2) to get the maximum range. Here the red LED (LED1) flickers according to the musical tones generated by UM66 IC, indicating modulation. IR LED2 and LED3 are infrared transmitting LEDs. For maximum sound transmission these should be oriented towards IR phototransistor L14F1 (T3).
Description of circuit diagram:
The IR music receiver uses popular op-amp IC µA741 and audio-frequency amplifier IC LM386 along with phototransistor L14F1 and some discrete components The melody generated by IC UM66 is transmitted through IR LEDs, received by phototransistor T3 and fed to pin 2 of IC µA741 (IC2). Its gain can be varied using potmeter VR1. The output of IC µA741 is fed to IC LM386 (IC3) via capacitor C5 and potmeter VR2. The melody produced is heard through the receiver’s loudspeaker. Potmeter VR2 is used to control the volume of loudspeaker LS1(8ohm, 1W). Switching off the power supply stops melody generation.brightness
Conclusion:
Using this circuit, audio musical notes can be generated and heard up to a distance of 10 metres. The circuit can be divided into two parts: IR music transmitter and receiver.