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The declared parameters for the goods do not correspond to the actual, in fact, they are underestimated by 3-4 times! This is either a gross error in the design or deliberate deception. Most likely the engineer is stupid, because he connected two parts that were not compatible with the parameters, so he got the parameters of the circuit 3-4 times worse than the sensor can do. The applied HX710B ADC (TM7711) has a gain of 128 and is not compatible with the applied sensor, because the sensor can be 0-40kPa (0-300 mmHg), but at the output of the circuit we get 0-10kPa (0-80 mmHg), and it is not possible to fix it in this design without prejudice to other parameters.1 - Declare the parameters 0-10kPa instead of the declared 0-40kPa, and do not deceive the buyer.2 - The manufacturer will correct this defect in the next revision of the board, apply another ADC chip, for example HX711, which has a gain of 32, it is compatible, it is checked.
2019-07-16
The parcel arrived at 16 days, 12 v works fine, well, this one has not yet connected
2019-07-02| Parte # | Mfg. | Descrizione | Azione | Prezzo |
|---|---|---|---|---|
| S-1133B34-U5T1U DISTI # S-1133B34-U5T1U-ND | ABLIC Inc | IC REG LINEAR 3.4V 300MA SOT89-5 RoHS: Compliant Min Qty: 1000 Container: Tape & Reel (TR) | Temporarily Out of Stock |
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| S-1133B34-U5T1U DISTI # S-1133B34-U5T1U | ABLIC Inc | LDO Regulator Positive Single-OUT 3.4V 300mA 5-Pin SOT-89 T/R - Tape and Reel (Alt: S-1133B34-U5T1U) RoHS: Compliant Min Qty: 1000 Container: Reel | Americas - 0 |
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| S-1133B34-U5T1U DISTI # 628-S-1133B34-U5T1G | ABLIC Inc | LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout RoHS: Compliant | 0 |
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| Immagine | Parte # | Descrizione |
|---|---|---|
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Mfr.#: S-1133B31-U5T1U OMO.#: OMO-S-1133B31-U5T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B46-U5T1U OMO.#: OMO-S-1133B46-U5T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B27-I8T1U OMO.#: OMO-S-1133B27-I8T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B57-I8T1U OMO.#: OMO-S-1133B57-I8T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B46-U5T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B22-U5T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B45-I8T1U |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B43-U5T1G |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B40-U5T1G |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
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Mfr.#: S-1133B44-U5T1G |
LDO Voltage Regulators LINEAR LDO REG HI 60uA Iq 300mA Iout |
