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How to Trigger SCRs in a Full wave AC/DC rectifier?
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<blockquote data-quote="PeterG1" data-source="post: 2490021" data-attributes="member: 415851"><p>I have a Full wave rectifier using 2 SCRs and 2 diodes to rectify AC to DC with adjustable voltage. My problem is I do not know how to trigger the SCRs. Does anyone have a circuit they like? </p><p></p><p>I saw this website: http://www.allaboutcircuits.com/vol_3/chpt_7/5.html</p><p></p><p>Where they advocate using a resistor and diode to trigger the SCR however I don't think it would work for me because my SCR:</p><p> http://www.datasheetcatalog.org/datasheet2/9/0pqdgz2uzpqaigcqwfpurhk4woyy.pdf</p><p></p><p>States on page 2 that the triggering pulse must be less than 1ms. So if I trigger them early in the cycle to say get 90% voltage my triggering pulse could be well north of 6 ms. Or am I thinking of this wrong?</p></blockquote><p></p>
[QUOTE="PeterG1, post: 2490021, member: 415851"] I have a Full wave rectifier using 2 SCRs and 2 diodes to rectify AC to DC with adjustable voltage. My problem is I do not know how to trigger the SCRs. Does anyone have a circuit they like? I saw this website: http://www.allaboutcircuits.com/vol_3/chpt_7/5.html Where they advocate using a resistor and diode to trigger the SCR however I don't think it would work for me because my SCR: http://www.datasheetcatalog.org/datasheet2/9/0pqdgz2uzpqaigcqwfpurhk4woyy.pdf States on page 2 that the triggering pulse must be less than 1ms. So if I trigger them early in the cycle to say get 90% voltage my triggering pulse could be well north of 6 ms. Or am I thinking of this wrong? [/QUOTE]
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