DSQC639 3HAC025097-00116 | ABB | External power supply measurement

Description

DSQC639 3HAC025097-00116 | ABB | External power supply measurement

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DSQC639 3HAC025097-00116  we have:

We provide considerate service and complete parts

① Promptly reply you within 24 hours；

② 100% quality assurance, 1-year warranty；

③ Best services, reasonable price；

④ Have been in the line for many years, has a good reputation；

⑤ We will ship the items within 3 working days after the payment is reached；

⑥ All the goods will be tested before shipment；

⑦ Packing in professional anti-static bag；

External power supply measurement. DSQC639 3HAC025097-00116 can accurately measure the optical and electrical characteristics of light-emitting diodes using a 3V voltage regulator or two series connected dry batteries and a multimeter (pointer or digital). To achieve this, simply connect the circuit as shown in Figure 10. If the measured VF is between 1.4-3V and the luminescence brightness is normal, it can indicate that the luminescence is normal. If VF=0 or VF ≈ 3V is measured and does not emit light, it indicates that the light-emitting tube is damaged.

Due to the infrared light-emitting diode, it emits 1-3 μ The infrared light of m is invisible to the human eye. DSQC639 3HAC025097-00116 usually has a single infrared light-emitting diode with an emission power of only a few mW, and the angular distribution of infrared LED emission intensity varies among different models. The forward voltage drop of infrared LEDs is generally 1.3-2.5V. It is precisely because the infrared light emitted by it is invisible to the human eye that the visible light LED detection method mentioned above can only determine whether the PN junction’s forward and reverse electrical characteristics are normal, and cannot determine whether its luminous situation is normal. For this, it is best to prepare a photosensitive device (such as 2CR, 2DR type silicon photocell) as the receiver. Measure the voltage changes at both ends of the photovoltaic cell using a multimeter. To determine whether an infrared LED emits infrared light after adding an appropriate forward current. The measurement circuit is shown in Figure 11.

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Mailbox：sauldcsplc@gmail.com |DSQC639 3HAC025097-00116
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