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MOC3041M Datasheet(PDF) 6 Page - Fairchild Semiconductor |
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MOC3041M Datasheet(HTML) 6 Page - Fairchild Semiconductor |
6 / 11 page 6 www.fairchildsemi.com MOC3031M, MOC3032M, MOC3033M, MOC3041M, MOC3042M, MOC3043M Rev. 1.0.1 Typical circuit (Fig 12, 13) for use when hot line switching is required. In this circuit the “hot” side of the line is switched and the load connected to the cold or neutral side. The load may be connected to either the neutral or hot line. Rin is calculated so that IF is equal to the rated IFT of the part, 5 mA for the MOC3033M and MOC3043M, 10 mA for the MOC3032M and MOC3042M, or 15 mA for the MOC3031M and MOC3041M. The 39 ohm resistor and 0.01 µF capacitor are for snubbing of the triac and may or may not be necessary depending upon the particular triac and load used. Figure 9. Static dv/dt Test Circuit Figure 10. Static dv/dt Test Waveform (MOC3031M, MOC3032M, MOC3033M) Vdc +400 for MOC304XM +250 for MOC303XM R = 10 k Ω CTEST X100 SCOPE PROBE PULSE INPUT MERCURY WETTED RELAY 158 V 0 VOLTS APPLIED VOLTAGE WAVEFORM Vmax = 250 V dv/dt = 0.63 Vmax = 158 RTEST D.U.T. D.U.T. τ τ τ τ RC RC RC Figure 11. Static dv/dt Test Waveform (MOC3041M, MOC3042M, MOC3043M) 252 V 0 VOLTS APPLIED VOLTAGE WAVEFORM Vmax = 400 V dv/dt = 0.63 Vmax = 252 RC τ RC RC 1. The mercury wetted relay provides a high speed repeated pulse to the D.U.T. 2. 100x scope probes are used, to allow high speeds and voltages. 3. The worst-case condition for static dv/dt is established by trigger- ing the D.U.T. with a normal LED input current, then removing the current. The variable RTEST allows the dv/dt to be gradually increased until the D.U.T. continues to trigger in response to the applied voltage pulse, even after the LED current has been removed. The dv/dt is then decreased until the D.U.T. stops trig- gering. τ RC is measured at this point and recorded. Figure 12. Hot-Line Switching Application Circuit (MOC3031M, MOC3032M, MOC3033M) 0.01 VCC Rin 1 2 3 6 5 4 115 VAC HOT NEUTRAL 180 Ω *For highly inductive loads (power factor < 0.5), change this value to 360 ohms. 1 k MOC3031M MOC3032M MOC3033M 39 Ω * LOAD Figure 13. Hot-Line Switching Application Circuit (MOC3041M, MOC3042M, MOC3043M) 0.01 VCC Rin 1 2 3 6 5 4 240 VAC HOT NEUTRAL 360 Ω *For highly inductive loads (power factor < 0.5), change this value to 360 ohms. 330 MOC3041M MOC3042M MOC3043M 39 Ω * LOAD |
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