| Part Numbert | Mfg | Packt | D/C | Descriptiont | Qty | Company/Contact |
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N81077SL1 Datasheet Application Description The input capacitor Ciis necessary for compensating line influences. Using a resistor of approx. 1 I in series with Ci, the oscillating circuit consisting of input inductivity and input capacitance can be damped. The output capacitor Co is necessary for the stability of the regulating circuit. Stability is guaranteed at values > 10 ~F and an ESR " io I within the operating temperature range. For small tolerances of the reset delay the spread of the capacitance of the delay capacitor and its temperature coefficient should be noted. N81077SL1 Price 1. Power Calculation In theApplication Circuit (Figure l),the voltage drop across the shuntwill be between 0 and 16mVRMS (0 t0 80A through a shunt resistor of 200pl ). This voltage is converted to a current of between o and 16pARMS, by means of resistors Ri and R2. The current sense input saturates at an input current of +25pA peak. For the voltage sensor input, the mains voltage (230VAC) is divided down through a dividert0 14V. The currentinto the A/D converterinputis setat14pARMS at nominal mains voltage, via resistor R4 (1M I ). In this configuration, with a mains voltage of 230V and a current of 80A, the output frequency ofthe SA9602H power meterchip at FOUTis l.16kHz. In this case l pulse will correspond to an energy consumption of 18.4kW/1160Hz = 15.9Ws. N81077SL1 on stock
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