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How does the heartbeat sensor work?

2019-02-21

A Heartbeat Sensor consists of an infrared LED and an infrared phototransistor.

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How are you using the big ultrasonic cleaner equipment?

2019-02-21

Well, in fact, the big ultrasonic cleaner equipment is used to clean such stuffs: Hardware parts, circuit boards, machinery, automobile parts, etc.

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If I input a lot of voltage into a transistor, will it break?

2019-02-21

Yep! It will certainly break the transistor. Don’t try to do that!

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How do I determine the traces width when designing a PCB?

2019-02-21

Generally, the following factors determine the PCB width traces: 1)Current 2)PCB Production technology 3)Other special requirements, including impedance requirement, etc.

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What happens when I run 220v motor on 110v AC?

2019-02-20

There are only two possible results you will observe: 1)The motor doesn’t run at all; 2)The motor will rotate but can’t up to a good state.

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If a 100-ohm resistor gives a reading of 30 ohms, can it be used for 30 ohm?

2019-02-20

For the sake of the circuit, you’d better not use it. Why? Obviously, the 100 ohm resistor is broken. In such a case, if you still try to use this broken 100 ohm resistor as a 30 ohms one, which is possible to cause the short circuit eventually.

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What are the must have skills for Robotics field?

2019-02-20

The must skills for Robotics field: Industrial robotics type: Service robotics type:

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What makes lithium ion the best choice for a battery?

2019-02-19

Well, frankly speaking, compared with the traditional battery, the following at least four points contributes to the lithium ion battery why it is the best choice:

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Does GPS work after your phone's battery is dead?

2019-02-19

Not really. Exactly speaking, the GPS fuction doesn’t work anymore once your phone’s battery was dead.

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How do I find the resistance of a burnt resistor?

2019-02-18

If you measure the resistance with an ohmmeter, as long as you get off resistance or short circuit resistance, that is the burnt resistor. Similarly, then you are able to measure the resistance of burnt resistor.

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