pin switches and ultrasonic protection

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j.a.kelly

Member - Posts: 19

Joined: April 28, 2003

Location: United Kingdom

Posted: January 28, 2004 at 1:45 PM / IP Logged

My fairly basic alarm has a ground trigger wire for pin switches, and interior ultrasonic protection.

However I cannot connect my pin switches and ultrasonics together, as it disables my ultrasonics.

On here it says about diodes but i know nothing about them, can i acheive what i want by using a relay and avoiding diodes??

If not could someone please shed some light on the diode situation, n what type i would need??

Thanks very much in advance!

Thanx 4 your time

jrilla

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Joined: November 19, 2002

Location: North Dakota, United States

Posted: January 28, 2004 at 2:31 PM / IP Logged

The diode section on this website will shed some light on them.

if you have 2 negative trigger zones and only one input wire on the alarm, 2 diodes will isolate the two circuits from each other. Put the band on the diode on the side of the sensor.

A 1N4001 diode will suit you just fine.

J Rilla

Owner/Installer

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pin switches and ultrasonic protection

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