Recent content by Prakash123

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  1. P

    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    I would like forum because of getting new idea and I will use DS14C89A in this project. I better to concentrate on rectifying problems in existing system.
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    Before this conversation I thought that without a suitable communication protocol there would be a data transfer problem and now I realized that there would be no problem at lower speed if circuit design and programming will be in perfect. This is the panic I have because I have to implement in...
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    Clock, data and other control signals are came along with data lines. I'm replacing transistor driver with RS232 because I already said there might be data loss in increasing data rate and this is my doubt. I'm in starting stage of my project and I had doubts to clarify before going into...
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    Hi
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    In peripheral side not having RS232, it just having ULN2003 and in micro-controller side, data was carried by each IRF540 via data lines in existing system. Why I choose RS232 standard means, there would be loss of data at 8KB/S in future system. In existing system speed rate was nearer to...
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    At peripheral end 15V is powering the shift register(CD4094BC) and this IC gives the ON/OFF signal to peripherals. Data line from micro controller connected with shift register so I'm in need to give 0V, 15V to input of this IC . That's why I'm asking 15V data line is required. Am I understand...
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    Hi heavens1944, I just customized RS232 standard to DB9 for my project. I'm in need to alter the existing project so in that system 7 data lines carrying 15V signal and 8 KB/s is new requirement. Peripherals connected with 15V so I need to carry 15V is must here and I have to use voltage level...
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    Hi, I just confused with pins and voltage levels in these standards that's why I asked with my requirement. Most of the RS232 interface IC max voltage is 15V in IC parametric search so can I use IC with 15V? Or can I use transistor or MOSFET for individual signal line?
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    Help needed for transmitting 15V signal to 10 metres at 8KB/s using RS232 or RS422 cable

    I'm trying to send and receive data using micro controller connected with external peripherals. Data line is equipped with 15V so I want to send 15V data over 10 metres with 7 data lines at 8KB/s. Can I modify the dedicated pins in RS232 or RS422 cable and can we change voltages to these cables...
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    Relation or difference between Input clamp current and Sink current

    Hi, Sink current means ability to receive current. I' confusing with "output mode". Please explain.
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    Relation or difference between Input clamp current and Sink current

    Sink current of PORTF pins are 2mA.
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    Relation or difference between Input clamp current and Sink current

    I want to take signal from external peripherals to PIC micro-controller(PIC18F66K22) through buffer IC(74HC541). My problem is o/p of buffer source current is +/-35mA, output clamping current +/- 20mA and i/p of PIC18F66K22 PORTF pin is 2mA. And another case input clamp current of PIC18F66K22 is...
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    Detecting solenoid ON and OFF state

    Oh very very thank you. I'm just confused about this things. I was sad about capacitor charge holding time may decrease after a years. But your last post was clarified my all doubts. Once again very very thanks...
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    Detecting solenoid ON and OFF state

    Yes, you are correct but in actual condition this is my real head ache problem that this will conclude my project. If this part successfully passed means I'm totally free to complete this project. So I've to tell to the customer to maintain the battery power as long as possible whenever the loom...
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    Detecting solenoid ON and OFF state

    Yes, I want to restore the last data when power failure occur. I will use power failure interrupt to save current data to EEPROM. 3 Bytes would be stored and time taken is maximum 20mS. The thing you telling is correct but certain condition problem may appear. Please rectify me from below...
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