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  1. CKaiL

    Constant current issue

    I have built a circuit. It is working when I tested it using a 9V battery and using a arduino board to generate a constant 5V supply. However , when I connect it to the power supply , the indicator from the power supply change from constant voltage to constant current. It is working and...
  2. CKaiL

    How to maintain constant voltage of 5 volt throughout 14 IC including 555 timer?

    Currently , I am using a 9V battery and it is being regulated to 5V to supply my ICs. I am using 14 ICs including 555 timer. I have a problem where I connect 2 and more ICs (full adder and etc.), The LEDs that connect to the output of the ICs get dimmer and dimmer and eventually, no light. How...
  3. CKaiL

    74LS193 counter issue - Please help

    Hi I am trying to let it count down from 10 to 0 and stop at 0. However , when I run it on multisim , it doesn't run at all. Anyone knows the issue? or did i connect wrongly? Please guide me
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