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ELT3043(S1)(TA)-V Datasheet(PDF) 6 Page - Everlight Electronics Co., Ltd |
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ELT3043(S1)(TA)-V Datasheet(HTML) 6 Page - Everlight Electronics Co., Ltd |
6 / 14 page 4 PIN DIP ZERO CROSS TRIAC DRIVER PHOTOCOUPLER Everlight Electronics Co., Ltd. 6 http://www.everlight.com Document No :DPC-0000134 Rev. 1 March 2,2012 ELT304X Series ELT306X Series ELT308X Series Figure 10. Static dv/dt Test Circuit & Waveform Measurement Method The high voltage pulse is set to the required VPEAK value and applied to the D.U.T. output side through the RC circuit above. LED current is not applied. The waveform VT is monitored using a x100 scope probe. By varying RTEST, the dv/dt (slope) is increased, until the D.U.T. is observed to trigger (waveform collapses). The dv/dt is then decreased until the D.U.T. stops triggering. At this point, τRC is recorded and the dv/dt calculated. For example, VPEAK = 600V for ELT306X series. The dv/dt value is calculated as follows: VPEAK 0 Applied VT Waveform τRC 0.632 x VPEAK 0.632 x VPEAK τ RC dv/dt = 50 10 k D.U.T. RTEST High Voltage CTEST VT A K T1 T2 Zero 0.63 x 600 τ RC dv/dt = = 378 τ RC |
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