Pankaj Biswas
New Member
Hi all,
In my project I need an electronic circuit which will provide NO contact for 20.3 VDC & it will provide NC contact for 11.7 VDC. Actually I want to control fire detectors through this circuit. In normal condition the detector gives output of 20.3 VDC but when it will be actuated it will gives an output of 11.7 VDC. Now I want to take the detector's signal to the DCS end. As the DCS will only accept the potential free contact,I need to generate potential free contacts in these two different states. I had tried 24 VDC relay to solve this but the problem arises with the reset level of the relay. The relay got set on 16.4 VDC but it got reset around 6 VDC. So the state was not changed though the detector's signal was changed. Please suggest a circuit to solve my problem.I am looking forward for your help.
In my project I need an electronic circuit which will provide NO contact for 20.3 VDC & it will provide NC contact for 11.7 VDC. Actually I want to control fire detectors through this circuit. In normal condition the detector gives output of 20.3 VDC but when it will be actuated it will gives an output of 11.7 VDC. Now I want to take the detector's signal to the DCS end. As the DCS will only accept the potential free contact,I need to generate potential free contacts in these two different states. I had tried 24 VDC relay to solve this but the problem arises with the reset level of the relay. The relay got set on 16.4 VDC but it got reset around 6 VDC. So the state was not changed though the detector's signal was changed. Please suggest a circuit to solve my problem.I am looking forward for your help.