kevmac Posted August 26, 2007 Share Posted August 26, 2007 i have a pir which gives a closed going open contact. My problem is that i need two independant outputs to trigger two devices. when i loop through both devices - throught the closed going open, only one will trigger. Does any one know of a solution which preferably does not use power Link to comment Share on other sites More sharing options...
ScorpioInstallations Posted August 26, 2007 Share Posted August 26, 2007 i have a pir which gives a closed going open contact. My problem is that i need two independant outputs to trigger two devices. when i loop through both devices - throught the closed going open, only one will trigger. Does any one know of a solution which preferably does not use power Sounds like your wireing them in series not in parallel, little more info would help us answer better though P.S Just in case your trying to switch power through the contacts, the reed switches will not take any significant voltage as they will weld shut as they change state Never Teach Your Apprentice Everything You Know Link to comment Share on other sites More sharing options...
Johnny Posted August 26, 2007 Share Posted August 26, 2007 i have a pir which gives a closed going open contact. My problem is that i need two independant outputs to trigger two devices. when i loop through both devices - throught the closed going open, only one will trigger. Does any one know of a solution which preferably does not use power You say 'does not use power' whats powering the pir?? Link to comment Share on other sites More sharing options...
camerabloke Posted August 27, 2007 Share Posted August 27, 2007 relay using pir 12v as power? Eucam Security Systems 0845 4630 746 www.eucam.co.uk Link to comment Share on other sites More sharing options...
kevmac Posted August 27, 2007 Author Share Posted August 27, 2007 The pir uses 12v, the system is battery operated and designed to work of 12v batteries. I have concidered sending 12v through the closed going open circuit to operate a relay which will give me 2 independant triggers. the problem is that my equipment only draws 32ma in standby. if i add a constantly energised relay it could double (or more) the consumption. Thus halving the battery life. Link to comment Share on other sites More sharing options...
spider Posted August 27, 2007 Share Posted August 27, 2007 Hi, You could use a reed relay which has a very low current consumption or convert the existing PIR relay to n/o type with additional reed in parallel (not sure if they do a dual reed relay) Note what one of the other posters has mentioned, reed relay contacts will 'weld' if excess current is drawn Ian Link to comment Share on other sites More sharing options...
camerabloke Posted August 27, 2007 Share Posted August 27, 2007 The pir uses 12v, the system is battery operated and designed to work of 12v batteries. I have concidered sending 12v through the closed going open circuit to operate a relay which will give me 2 independant triggers. the problem is that my equipment only draws 32ma in standby. if i add a constantly energised relay it could double (or more) the consumption. Thus halving the battery life. stick 2 batteries on then Eucam Security Systems 0845 4630 746 www.eucam.co.uk Link to comment Share on other sites More sharing options...
ScorpioInstallations Posted August 27, 2007 Share Posted August 27, 2007 i have a pir which gives a closed going open contact. My problem is that i need two independant outputs to trigger two devices. when i loop through both devices - throught the closed going open, only one will trigger. Does any one know of a solution which preferably does not use power What is it your trying to do ? Never Teach Your Apprentice Everything You Know Link to comment Share on other sites More sharing options...
kevmac Posted August 27, 2007 Author Share Posted August 27, 2007 I think i have cracked it. right or wrong...it works. I have passed both signal outputs from both devices through diodes, i have then commoned them and passed them through the closed going open switch (PIR) i have then commoned the other side and fed it to both devices trigger ground. Not sure why... but it works !!! Link to comment Share on other sites More sharing options...
ScorpioInstallations Posted August 27, 2007 Share Posted August 27, 2007 I think i have cracked it. right or wrong...it works. I have passed both signal outputs from both devices through diodes, i have then commoned them and passed them through the closed going open switch (PIR) i have then commoned the other side and fed it to both devices trigger ground. Not sure why... but it works !!! Never Teach Your Apprentice Everything You Know Link to comment Share on other sites More sharing options...
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