No hay artículos en el carro
No hay artículos en el carro Características:
1. Rendimiento de ruido líder en la industria a través de técnicas patentadas de diseño de amplificador y filtro
2. El escudo integrado reduce en gran medida el acoplamiento capacitivo de
conductor de corriente para morir debido a las señales altas de dV/dT,
y evita la deriva compensada en aplicaciones de alto voltaje
3. Mejora total de errores de salida a través de ganancia y compensación de ajuste sobre la temperatura
4. Tamaño de paquete pequeño, con fácil capacidad de montaje
5. Monolithic Hall IC para una alta fiabilidad
6. Pérdida de potencia ultrabaja 100μΩ de resistencia interna del conductor
7. El aislamiento galvánico permite su uso en condiciones económicas,
Detección de corriente de lado alto en sistemas de alto voltaje
8. 3.0 a 5.5 V, operación de alimentación única.
9. Ancho de banda típico de 120 KHz
10. Tiempo de subida de salida de 3 us en respuesta a la corriente de entrada de paso
El paquete incluye:
1 módulo de sensor de corriente lineal ACS758 ACS758LCB-050B-PFF-T 50A
Mohamad farhat
Comentado en los Estados Unidos el 17 de agosto de 2024
quick serice
P. Meyer
Comentado en los Estados Unidos el 2 de enero de 2023
The holes are too small for anything bigger than 14 ga wire so keep them short.
James Murdock
Comentado en los Estados Unidos el 6 de abril de 2023
The holes are stupidly small!This is a nice chip from Allegro, but#1 issue: op-amp choice of this board is wrong. A 40mV per amp, a 50 amp peak (35A RMS if AC volts), the output at Vcc of 5v will be Vcc/2 + 2 = 4.5 volts. The 2272C op amp has a Vcc-1.5v or 5v - 1.5v = 3.5 volts, so the buffered output will clip the output. The unbuffered output ou1 should look good. (I didn't test this). The op amp should be a rail to rail *input* model, not just rail-rail output!#2 issue the chip is output limited If using it at 3.3v supply. The idle voltage of Vcc/2 = 1.65 v so with 40mV per amp sensitivity, the output range limits the current range to 1.65/0.04 = 41.25 volts (29 amps RMS with sinusoid AC).So, if you need 50A peak / 35A RMS, then skip the buffered output, power at 5v and use your own op amp on the unbuffered output IF you need to bias the output for a 3.3 volt A/D input.If you need 3.3v yet are OK being limited at 28 amps, use the unbuffered output without the opamp.That said, the unbuffered output might be fine, just don't load it with a low impedance.
Alexander Odyniec
Comentado en los Estados Unidos el 30 de abril de 2023
The biggest advantage of this module is its printed circuit board. It's easy to prototype with and it's cheap.Kudos to Mr James Murdock for catching the #1 issue with the buffer 2272C op amp -- it doesn't support rail-to-rail input.It may not be a problem though if AC current sensing is not required and DC current flows from IP- to IP+. Since the quiescent output is Vcc/2 at I=0, the output will stay in the lower half of the Vcc.However, I don't see the range limitation James described in his issue #2. The sensor's magnetic sensitivity is NOT 40 mV per Amp at 3.3 Vcc. It is 40 mV/A only at 5 Vcc. Its datasheet states:"Ratiometry. The device features a ratiometric output. Thismeans that the quiescent voltage output, VIOUTQ, and the magneticsensitivity, Sens, are proportional to the supply voltage, VCC."I just measured it. My 3.3 V supply runs a little high at 3.52 V and my Vcc/2 is 1.76 V. My measured magnetic sensitivity is 28.16 mV/A as it should be at 3.52 Vcc.Lastly, regarding the PCB holes being too small, the solid workaround is to solder your heavy gauge wire directly onto the J-leads of the sensor chip.
Michael L.
Comentado en los Estados Unidos el 23 de septiembre de 2021
Can be safely attached when dealing with higher current demands. Solder points sized appropriately.
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