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6164 [theme_style] => 0 [layout] => index [zone] => 5 [sequence] => 0 [has_sub_elements] => 0 [sub_elements_of] => 0 [ele_is] => index_footer [is_html] => 1 [data_module] => views [data_module_key] => views [data_task] => findSectionContentHTML [data_save] => [data_id] => 0 [data_search] => [data_filter] => [data_order] => [data_paginate] => 0 [data_page] => 0 [data_length] => 0 [data_html] => <footer id="footer"> <div class="footer-content small"> <div class="container"> <div class="row"> <div class="col-md-3 text-light"> <div class="widget clearfix widget-contact-us"> <h4 class="widget-title">บริษัท ดีเค ทู พลัส จำกัด</h4> <ul class="list-large list-icons"> <li><strong>สำนักงานใหญ่:</strong> 71/16 ถ.บรมราชชนนี แขวงอรุณอมรินทร์ เขตบางกอกน้อย กทม. 10700</li> <li><strong>โทร:</strong> 095-823-1892</li> <li><strong>ติดต่อโฆษณา :</strong> 081-927-6004<br><strong> :</strong> 081-567-2832<a href="callto:0898183238"><br></a></li> <li><strong>สอบถามการใช้งานเว็บ :</strong> 095-823-1892</li> 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หน้าที่หลักของ “แตร” ก็คือผลิตเสียงสัญญาณเพื่อเตือนให้ผู้ใช้ถนนได้ทราบ โดยเสียงของแตรเกิดจากการสั่นสะเทือนของไดอะแฟรมภายในแตร ปกติในวงจรแตรจะนิยมใช้แตร 2 ตัวเป็นแตรเสียงต่ำ 1 ตัวและแตรเสียงสูงอีก 1 ตัว โดยวงจรแตรที่ใช้ในรถยนต์มี 2 แบบคือ วงจรแตรแบบธรรมดา และ วงจรแตรแบบใช้รีเลย์
ในวงจรแตรแบบธรรมดาเวลาแตรทำงานจะมีกระแสไฟฟ้าจำนวนมากที่ผ่านสวิตช์แตร ทำให้สวิตช์ร้อนเป็นเหตุให้สวิตช์แตรมีอายุการใช้งานสั้น ดังนั้นในปัจจุบันจึงหันมาใช้วงจรแตรแบบใช้รีเลย์กัน
การทำงานของแตรแบบใช้รีเลย์ก็คือเมื่อกดสวิตช์แตรกระแสไฟฟ้าจากแบตเตอรี่จะผ่านฟิวส์แตร ผ่านขั้วเข้า B ของรีเลย์แตร ผ่านคอยล์ในรีเลย์ ผ่านขั้ว S ของรีเลย์แตร ผ่านเข้าสวิตช์แตรแล้วลงกราวด์ครบวงจร ทำให้แกนเหล็กอ่อนที่คอยล์พันอยู่เกิดอำนาจแม่เหล็ก ดูดคอนแทกของรีเลย์ให้ต่อกัน กระแสไฟฟ้าจากแบตเตอรี่จะผ่านคอนแทกที่ต่อกัน ผ่านขั้ว H ของรีเลย์แตร ผ่านเข้าขั้วบวกของแตร ผ่านออกขั้วลบของแตรแล้วลงกราวด์ ครบวงจรทำให้แตรทำงาน ในวงจรนี้กระแสไฟฟ้าที่ผ่านสวิตช์แตรเป็นกระแสไฟฟ้าจำนวนน้อยที่ผ่านเข้าเลี้ยงคอยล์ของรีเลย์จึงช่วยยืดอายุการทำงานของสวิตช์แตร
อย่างไรก็ตาม แม้ว่าเราอาจจะพอรู้เรื่องของวงจร แตร แต่ส่วนใหญ่เมื่อแตรเสีย อันเนื่องมาจากหลายสาเหตุ สาเหตุหลักๆ อาจจะเกิดจากฟิวส์ของแตรที่ขาด ซึ่งก็ต้องตรวจสอบกันก่อนอาจเกิดการลัดวงจรหรือใช้ฟิวส์ไม่เหมาะสม ส่วนการเปลี่ยนแตรตัวใหม่ นั้นสามารถลงมือทำกันได้ไม่ยาก แต่ก็ต้องหาตำแหน่งของการติดตั้ง “แตร” ก่อน อาจใช้แต่รูปแบบเดิมเพื่อการติดตั้งที่สะดวก หรือแตรรูปแบบอื่นๆ ก็ต้องมีการดัดแปลงจุดยึดกันเล็กน้อย ส่วนเรื่องสายไฟ ส่วนใหญ่ก็จะมีการเดินเอาไว้อยู่แล้ว เว้นแต่สายไฟสึกหรอมีอายุการใช้งานมายาวนาน ก็อาจต้องรื้อเปลี่ยนใหม่
สำหรับการเลือกแตรรถยนต์มาใช้นั้น ก็ควรเลือกให้เหมาะสมกับรถของเรา ซึ่งประเภทของแตรมีอยู่ด้วยกันหลายชนิด ตั้งแต่แตรไฟฟ้าแบบธรรมดา แตรหอยโข่ง แตรลม ซึ่งสองชนิดหลังนี้รถยนต์เล็กๆ อาจไม่เหมาะสมนัก ส่วนใหญ่ก็จะใช้แตรไฟฟ้าปรกติ ซึ่งถ้าเป็นแตรที่มีจำหน่ายทั่วไปก็จะมีให้เลือกอีกว่ามีโทนเสียงอย่างไร ลิ้นเป็นแบบไหน ซึ่งก็ควรจะเลือกลิ้นที่เป็นประเภทกันน้ำได้จะมีอายุการใช้งานที่ยาวนานกว่านั่นเอง
07 สิงหาคม 2561
ผู้ชม 2926 ครั้ง