Spyman48 Posted September 27, 2016 Share Posted September 27, 2016 Hi Just wondered why in alarm world it always seems to be mainly switched negative no positive Thanks Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/ Share on other sites More sharing options...
james.wilson Posted September 27, 2016 Share Posted September 27, 2016 Not sure if there is a tech reason just the way it is. But when i strated tamper returns were positive securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450574 Share on other sites More sharing options...
Rulland Posted September 27, 2016 Share Posted September 27, 2016 40 minutes ago, james.wilson said: But when i strated tamper returns were positive They did that in the early 1900's.... Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450577 Share on other sites More sharing options...
james.wilson Posted September 27, 2016 Share Posted September 27, 2016 ho ho ho securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450578 Share on other sites More sharing options...
al-yeti Posted September 27, 2016 Share Posted September 27, 2016 Because it normally starts positive and by the end of a tsi thread it's negative , kind of adds up this Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450582 Share on other sites More sharing options...
datadiffusion Posted September 27, 2016 Share Posted September 27, 2016 2 hours ago, james.wilson said: ho ho ho So, I've decided to take my work back underground.... to stop it falling into the wrong hands Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450589 Share on other sites More sharing options...
sixwheeledbeast Posted September 27, 2016 Share Posted September 27, 2016 The outputs are driven by transistors. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450597 Share on other sites More sharing options...
james.wilson Posted September 27, 2016 Share Posted September 27, 2016 could still be pos drive tho securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450606 Share on other sites More sharing options...
9651 Posted September 27, 2016 Share Posted September 27, 2016 i was under the impression it was 'kinder' to switch a ov, ie less of a spike so to speak??? Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450608 Share on other sites More sharing options...
james.wilson Posted September 27, 2016 Share Posted September 27, 2016 cant see what dif it would make on that? securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount. Link to comment https://www.thesecurityinstaller.co.uk/community/topic/40474-negative-switched/#findComment-450609 Share on other sites More sharing options...
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