Do smoke detectors need to have the LED light (not the green or red small light)
Yes, the smoke detectors also need to have the LED light; Generally, as long as the smoke detector detects smoke and when the smoke reaches the alarm concentration, the detector red light will flash and give an alarm.
How can we get a small custom electronic device designed and manufactured?
To get a small custom electronic device designed and manufactured, the good way that is you should look for the corresponding professional ODM and OEM one-stop professional platform. No doubt, it can not only save your time but also improve your working efficiency. Sure, the most important is that you will get the custom product what you want.
How is the voltmeter and ammeter connected in a circuit?
The voltmeter is connected in parallel in a circuit, while the ammeter is in series in a circuit.
Why, in PCB technology, is the board made out of semiconductors?
As we all know, the circuit board is not only an important electronic part, but also the support of electronic components and the carrier for electrical connection of electronic components. Meanwhile, there are a lot applications of monocrystalline silicon materials in semiconductor materials. That’s to say, if a large number of transistor, diodes other components and connecting wires are made directly on a single silicon material, which can form the integrated circuit.
What is the difference between frequency and amplitude?
The difference between frequency and amplitude: Frequency is the number of vibrations per unit time, and Amplitude is the magnitude of the vibration.
What's the application of the PCB cutting machine?
The PCB cutting machine is used to cut PCB. BTW, the new PCB cutting machine equipment is composed of laser optical system, mechanical transmission system, electronic control system and auxiliary system.
What do you do if you can't find a charger?
There are three different options for your reference: 1) If you don’t need use it for the time being. Then keep looking it for, borrowing or buying a new one;2) If you have data wire, you can try to find a USB interface;3) DIY Charger.
What do you call a switch which returns to the initial position after each click
It should be a Self-Locking Switch, which is also called latching push button switch. Actually they are different.
What do you call a switch which returns to the initial position after each click
It should be a Self-Locking Switch, which is also called latching push button switch. Actually they are different.
Can your handheld electronic device be more powerful than a PC, How?
Well, it still depends on science and technology innovation, which leading the industry. Sure, you can specialized in relevant certain field, such as: Handheld Terminal Reading and Writing Device, RFID (Radio Frequency Identification) and so on.
How can change AC 220 v to DC 200 or 220 v?
Using a Full Bridge Rectifier with a Voltage Stabilizing Circuit, then you can change AC 220 v to DC 200 or 220 v.
How do I check a passive and active components for short circuit on a PCB board?
Generally speaking, multimeter is used to measure the resistance of passive and active components, which is quite helpful to check the short circuit on a PCB board.
Can you plug an electric kettle and a refrigerator on the same circuit?
1)You’d better have a single line for the refrigerator instead of sharing a line with other electrical appliances.Although the refrigerator power is small, due to it starts up frequently and the starting current is high. If it shares the same circuit with other electrical appliances, which may cause the other appliances to lose their power instantaneously. In addition, it will shorten the life of the appliances if you plug it for a long term. 2)Sure, considering the electric kettle is a type of pure resistance electrical appliance. If you still want to plug an electric kettle and a refrigerator on the same circuit, we suggest that the power of electric kettle should not exceed 1500 w.
How can change AC 220 v to DC 200 or 220 v?
Using a Full Bridge Rectifier with a Voltage Stabilizing Circuit, then you can change AC 220 v to DC 200 or 220 v.
How do I check a passive and active components for short circuit on a PCB board?
Generally speaking, multimeter is used to measure the resistance of passive and active components, which is quite helpful to check the short circuit on a PCB board.
Can you plug an electric kettle and a refrigerator on the same circuit?
1)You’d better have a single line for the refrigerator instead of sharing a line with other electrical appliances.Although the refrigerator power is small, due to it starts up frequently and the starting current is high. If it shares the same circuit with other electrical appliances, which may cause the other appliances to lose their power instantaneously. In addition, it will shorten the life of the appliances if you plug it for a long term. 2)Sure, considering the electric kettle is a type of pure resistance electrical appliance. If you still want to plug an electric kettle and a refrigerator on the same circuit, we suggest that the power of electric kettle should not exceed 1500 w.
Where can I order cheap dual sided PCB?
I guess, the circuit board factory of Pearl River Delta in China should be your best choice. Meanwhile, I strongly recommend Shenzhen Grande, a professional PCBA Manufacturer in Shenzhen. I believe, it will definately offer high quality with competitive price in terms of double-sided circuit board.
What is GPS PCBA?
GPS PCBA: GPS solution / GPS module / GPS Navigator / OEM & ODM
Which software is the best to learn 3D Design? Solidworks or Fusion 360?
The best softwares to learn 3D Design: SolidWorks、ProE、3D MAX、MAYA, etc.
What is the difference between motherboard and PCB?
We can say that motherboard belongs to PCB, but not all PCBs are motherboard, such as: front panel, key board, power board, switch board, memory board, module board, etc.
What PCB design software does Apple use?
The PCB design software of Apple uses should be Mentor pads & Cadence.
What is the purpose of the small hole in the prongs of power plugs?
In the early times, the power plug has a small hole to fix, but now it's different; In fact, the purpose of the small hole in the prongs of power plugs is of heat dissipation, especially in the joint. Since the power plug is not a whole, there will be resistance at the joint, which produce heat after using for a long time. That’s to say, if the heat is not dissipated in time, the joint will turn soft. Finally, it will outbreak a fire due to the short circuit.
Are motors manufactured on PCB?
Nope. Motors aren't manufactured on PCB. Actually, it refers to an electromagnetic device that converts or transfers electrical energy according to the law of electromagnetic induction. The Main function of motor: To use mechanical energy to convert electric energy. At present, the most commonly used is using heat energy, hydraulic energy and so on to promote the generator amature to generate electricity.
What is an isolation gap on a power PCB?
Isolation gap on a power PCB : Spacing on a power PCB Spacing of common power PCB: Double-sided PCB: 0.3mm;Single-sided PCB: 0.5mm;Module power supply & transformer input sideline: 1mm; For those AC input but DC output power supply, safety spacing should be more than 6mm; The radiator of switching power supply, spacing should be over 2mm.
What is the difference between a diode and a capacitor?
The difference between a diode and a capacitor: 1. Diode is an electronic component with unidirectional conduction current, which is widely applied to switches, rectifiers, voltage stabilizers, etc; 2. Capacitor is used in straightening, coupling, filtering, tuning loop, energy conversion and so on; 3. Varactor Diode is used as an electronic adjustable capacitor;Besides, Zener Diode can also be used as capacitors, but they are not equivalent. 4. Of course, the appearance of diode and capacitor is definitely different.
Are the peak input and output voltages of the half wave diode rectifier equal?
No. They are not equal. A rectifier is an electrical device which converts alternating current (AC) to direct current (DC), which flows in only one direction. The process is known as rectification.(Wiki) After half-wave rectification, the output voltage is only approximately an half of the original voltage because an half of the AC waveform is discarded.
Is nodal analysis applicable to both DC and AC supply?
Yes,nodal analysis is applicable to both DC and AC. Nodal analysis, which is a method of determining the voltage (potential difference) between "nodes" (points where elements or branches connect) in an electrical circuit in terms of the branch currents. (Wiki)
Is there any problem if I use regular single-strand wire for solar connection?
Not really. We can only say that the same wire diameter, the conductivity of multi-strand wire is larger than that of a single-strand wire, because the current passes through the surface of the wire and the surface area of the multi-strand wire is bigger. The difference between multi-strand wire and single-strand wire: Multi-strand wire: Soft, good heat dissipation, which is suitable for laying thick pipes or thicker power lines;Single-strand wire: Hard, which is suitable for laying outside or finer power; The service life is relatively longer, and it’s not easy to oxidize. Multi-strand wire is BVR; Single core but multi-strand soft wire & single-strand wire is BV.
What is the diameter of a wire? How is this determined?
If you know the square of wire, you can calculate the radius of wire by using that the formula for calculating the circular area, then diameter = 2 * radius ; Likewise, if you know the diameter of the wire, you can also calculate the square of wire by using that the same formula for calculating the circular area. The Formula:The Square of Wire=3.14* the Square of Radius
How do I make a simple ON/OFF sensor with LED?
Well, you may need to prepare these stuff, these are: A LAS ( light activated switch )A LEDTwo Photosensitive resistorsBatteries
Which electronics have the highest gold recovery?
The highest gold recovery electronics: 1)Mobile phone mainboard2)CPU3)Memory chip4)PCB
Where do they get the silicon used in transistors?
The silicon used in transistors is mainly from silicon dioxide.
What are the basic materials required to prepare a PCB at home?
PCB, which can be cut traces and drilled holes in the copper clad laminate with the knife; PCBA, all the components can be directly welded on the universal board (you can buy the universal board in the store. It’s limited in the terms of usage though.)
Why haven't desktop computers become obsolete already?
The reasons why the desktop computers haven’t become obsolete already: 1)Powerful hardware performance;2)Affordable price;3)Better gaming experience (larger monitors);4) Easier upgrading of hardware;At present, the desktop computers aren’t of obsolescence right now. However, it's likely to be replaced by other computers (like laptop) in the next few decades.
Why does a new battery fail to work when it is used before charging?
Since a new battery is in a discharge condition, which must be recharged before using. The battery that is set up with a power calculation processing software to calculate the power. At the very first, the battery should full charge then full discharge for 2 to 6 times, so that it will reach the maximum capacity.
How are plated through holes (PTH) made? What chemicals are used in it?
Making Plated through holes (PTH): Electroplating before making plated through hole ( The same environment as copper on the surface of electroplating)
How can we professionally design a multilayer PCB stackup?
Professionally designing a multilayer PCB stackup: First of all, with the help of the impedance calculation software; Secondly, according to the requirements of design performance parameters, combining with the requirements of production engineering; Finally, we can professionally obatin a reasonable multilayer PCB stackup.
Is it practical to create a PCB antenna for NFC?
NFC is of non-contact intelligent identification and interconnection technology, which is able to realize near field communication among mobile devices, consumer electronics, PC and intelligent control tools. NFC is made up of NFE moudle and NFC antenna; Generally speaking, the NFC antenna is composed of circuit coils made by winding / printing / etching process and ferrite materials with anti-interference capability. PS: NFC—-Near Field Communication
Is the computer a microprocessor or a microcontroller?
Actually, the computer is a microcontroller. Microcontroller, which means CPU and other circuits are integrated into an integrated circuit chip in order to form a complete microcomputer system.
Are electricity and electric current the same thing?
Nope. Electricity is different from electric current essentially. Electricity is a natural phenomenon, a form of energy, including positive electricity and negtive electricity, which is used in the form of electric current. We guess, that should be a kind of relationship between electricity and electric current.
How do I know the positive and negative sides in PCBA?
The positive and negtive sides in PCBA, which refers to the surface of the PCBA, that’s only the common addressing in circuit board; Normally, we tend to define the side with THT or high components as the positive side, while the reverse one is the negative side.
What are pros and cons of metal roofs?
The way I see, as for the pros and cons of metal roofs, we will image that in our mind, such as: Pros:1)Long service life than other materials;2)More gorgeous;3)Much convenient to split it up if nessary;4)Relatively lighter than ceramic material ,etc. Cons:1)Pay more attention to the lightning-protection due to the conductivity of metal;2)The metal roof need to be protected against rust;3)The common problem of roof leaking.For other more questions, welcome to visit Shenzhen Grande.
How do power companies balance electricity if they produce too much, or little?
In fact, electric power system has been designed to be an active power balance of power system. That’s to say, 1)When the balance of supply and demand is normal, the electricity load will be opened according to the plan in order to meet the demand of electricity; 2)If not, early warning report will also take strictly measures on the basis of the power consumption index, weather condition and load of scheduling.
What is the heavy copper PCB?
Generally, a layer of copper foil is bonded to the substrate of the PCB. And there are usually four kinds of copper foil thickness, such as 18 μ m, 35 μ m, 55 μ m and 70 μ m; However, some of them need up to be 3oz-10oz or even heavier. Thus these more than 2oz copper foil PCB are called heavy copper PCB.
How is a signal transmitted in a pcb trace?
As we all know, the signal in a circuit board all correspond to the certain functions, which is also associated with the working state of the corresponding components. Thus, it indicates that as long as the component doesn’t work as normal, the corresponding function must be not available. By this way, I believe, you can transmit the signal in a PCB trace easily.
What is the thermal shock effect on electronic components?
Actually, there are at least two thermal shocks during the welding and assembly of electronic components, which affect the accuracy and stability of electronic components.
How can I merge Gerber files of PCB using Cam350 12.1V?
In order to merge Gerber files of PCB using Cam350 12.1v: First of all, you should “import Gerber file” with Cam 350 12.1V correctly, then “File-Exprort-Gerber Data”. That’s to say, you will get the Gerber file with a “gbr” extension; Secondly, opening the “PROTEL” and creating a new PCB file, clicking “File-Import”, choosing “Batch Gerber” and importing the Gerber file finally. If you still have questions, please do feel free to ask Shenzhen Grande.
Which type of microcontroller is better: Atmel or PIC?
PIC microcontroller: A microcontroller chip which is used to manage the operation of embedded systems in different devices; Atmel microcontroller: A system-level chip, which is better than PIC microcontroller. PIC microcontrollers - WikipediaAtmel ARM-based processors - Wikipedia
Why is there an autotransformer in all laboratory circuits?
When it comes to the reason why there is an autotransformer in all laboratory circuits, we should take its function consideration first. Generally, an autotransformer is mainly used as the voltage regulating equipment in the laboratory. Exactly speaking, it plays a role in lowering the voltage while starting the AC motor.
What is your favorite brand of oscilloscope?
Agilent, the boss of oscilloscope industry, which is definitely a good choice for your reference; Besides, I’d like to recommend another oscilloscope brand, Tektronix, with its accurate measurement and powerful function, I guess, you will also be satisfied with it.
What's the main difference between electrical instruments and electronic device?
Electrical instruments: A device which is used to detect, analyze and test the performance, quality and safety of electronic products. Electronic devices: A electrical equipment that consist of microelectronic components, which concentrates on low-voltage;
How do I find the resistance of a burnt resistor?
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.
Does GPS work after your phone's battery is dead?
Not really. Exactly speaking, the GPS fuction doesn’t work anymore once your phone’s battery was dead. For example, Iphone will send the last location information to the cloud before it ran out of power. That’s to say, you can only check the last location information on the cloud. For more questions, please be free to ask Shenzhen Grande.
What makes lithium ion the best choice for a battery?
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: 1) Faster charging2)Longer service life3) Higher efficiency with higher power density4) Lighter in weight
How do I determine the traces width when designing a PCB?
Generally, the following factors determine the PCB width traces: 1)Current2)PCB Production technology3)Other special requirements, including impedance requirement, etc.
If I input a lot of voltage into a transistor, will it break?
Yep! It will certainly break the transistor. Don’t try to do that! Why?The excessively high working voltage is easy to cause the high power dissipation, and junction temperature will also exceed limit value. As a result, the transistor is burned out finally.
How are you using the big ultrasonic cleaner equipment?
Well, in fact, the big ultrasonic cleaner equipment is used to clean such stuffs: Hardware parts, circuit boards, machinery, automobile parts, etc. In addition, there are generally two cleaning agents while using ultrasonic cleaner equipment: Chemical cleaning agent and water-based cleaning agent. As we can see, one cleaning medium is chemical, the other is physical. That’s to say, with the combination of these two mediums, the object can be cleaned fully and thoroughly.