ULN2003 max input voltage?

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  • waqqas.qayyum1
    Member
    • Feb 2017
    • 21
    • Qatar
    #21
    Re: ULN2003 max input voltage?

    Sir the way I explained, I made the circuit like that. I removed all the board relays and connected external relays. I gave Neutral and Phase input to board. Before the board the board was getting R N B N Y N because the heating elements were getting current pass through the relays contacts. so i removed the relays and provided only N and Phase to the board. When i turn on the circuit it works normally but when i connect controller to the board the neutral fuse blows each time i connect the controller. I dont know what is the issue here.

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      • waqqas.qayyum1
        Member
        • Feb 2017
        • 21
        • Qatar
        #22
        Re: ULN2003 max input voltage?

        I need to provide R Y B to board. I think no need. board only need R phase for its controller electronics part and neutral. but 100mA fuse is blowing again and again after i connect room controlled device. Before room controlled device it is ok. I dont know what to do.
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        Last edited by waqqas.qayyum1; 03-07-2017, 06:49 PM.

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