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JK Flip-Flop CD4027B: Circuit, Pinout, and Datasheet

General Description
CD4027B is a dual JK flip-flop with a set terminal (SET) and clear terminal (RESET) and two output terminals of positive and negative phases. Triggered by the rising edge of the clock signal, both set and clear operations are active high. The CD4027 contains two monolithic integrated circuits with independent, complementary, and symmetrical J-K master-slave flip-flops. Each flip-flop provides J, K, set, reset, clock input, and buffered Q and Q non-output signals, respectively. The device can be used as a shift register, and by connecting the Q output to the data input, as a counter and flip-flop. When triggered on the rising edge of the clock, the logic level applied to the D input is transferred to the Q output. Set and reset are independent of the clock and are accomplished by a high level on the set or reset lines, respectively.
The CD4027B is useful when performing control, register, and switching functions. The logic levels of the J and K inputs and internal automatic controls control the state of each flip-flop; the change in the flip-flop state is synchronized with the positive transition of the clock pulse. The set and reset functions are clock independent and are initiated when a high signal occurs on the set or reset input.
Due to its superior performance and reliable quality, CD4027B is widely used for registers, counters, and control circuits.
CD4027B Pinout Configuration and Description
CD4027B Specification
Number of channels (#) – 2
Technology Family – CD4000
Supply voltage (Min) (V) – 3
Supply voltage (Max) (V) – 18
Input type – TTL
Output type – Push-Pull
Clock Frequency (MHz) – 12
ICC (Max) (uA) – 600
IOL (Max) (mA) – 1.5
IOH (Max) (mA) – -1.5
Features – Balanced outputs, Positive edge-triggered, Standard speed (tpd > 50ns), Positive input clamp diode, Preset, Clear
CD4027B Functional Block Diagram
Where to use CD4027B
Typical applications of CD4027B
CD4027 application circuit diagram (1): Photo-controlled relay switch circuit made with CD4027
The optical switch is made of double JK flip-flop integrated circuit CD4027. Typically a 555 chip would be used as the clock pulse, the circuit described here dispenses with this requirement. One of the two flip-flops in the CD4027 itself acts as a square wave oscillator.
CD4027 application circuit diagram (2): dual-channel sequential output switch circuit triggered by audio signal control (LM324\CD4027)
The sound is picked up by the electret microphone, which provides a good gain through the first and second op-amps of the four op-amps integrated circuit LM324. The third operational amplifier is configured as a level detector, and the non-inverting terminal amplifies and filters the signal output by the second op-amp. The inverting input of the third operational amplifier is connected to a voltage divider, and the reference voltage is given by a 10K resistor and a 4.7K potentiometer. The 100-ohm resistor ensures that the circuit triggers without error. Therefore, the sensitivity (threshold) of the circuit can be controlled by adjusting the potentiometer. Sensitivity control thus helps to reject any unwanted external sounds. The output of the level detector is a square wave pulse used to trigger the flip-flop. A 100uF capacitor connected to the power supply also helps avoid noise.
Since the circuit operates at 4.5V, digital circuits can be easily used. The circuit on the right can be used to control the direction of the DC motor. The circuit uses four NPN transistors and controls whether the transistors T1 and T4 are turned on or T2 and T3 are turned on through the CD4027 logic level. Filters connected to the circuit and tuned to different audio frequencies allow the same circuit to control multiple devices. For example, a high-frequency sound (such as a whistle) can switch device 1 and a low-frequency sound (such as clapping) can control device 2.
CD4027 application circuit diagram (3): nine-digit key combination lock circuit composed of CD4027
The nine-digit key combination lock as shown in the figure has a total of 9 keys, but there are only 4 valid keys, and the remaining 5 keys are pseudo keys. When the pseudo key is pressed, the circuit is reset, and the input of the previously pressed valid key is all invalid. The circuit composition is shown in the figure. The circuit consists of two dual JK flip-flops CD4027 and a dual four-input AND gate CD4082. Four of the two JK flip-flops are combined in parallel, and their respective CP terminals are connected to an effective button. Only by pressing the four effective buttons in sequence, can the AND gate output a high level to open the lock. If the pseudo key is pressed halfway, the circuit will automatically reset.
CD4027 Application Circuit Diagram (4): Ball Game Scorer (CD4027, CD4055, CD40192)
The circuit of the ball game scorer is shown in the figure, it is used to record and display the ball game results. The first nixie tube has only two states, that is, “off” or “1”, and the last two nixie tubes can display ten states from “0” to “9”, so the highest score of the scorer can reach 199 points. The circuit is mainly composed of the counter, decoding circuit, trigger circuit, display circuit, and an anti-jitter switch circuit.
CD4027B Datasheet Download
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The aftermath of a car crash is overwhelming, but you can get your life back on track

An auto accident is shocking and traumatic, and besides the physical injuries, you may also experience emotional distress in its aftermath. As challenging as it may be, getting your life back on track is possible. But you must remember to be patient and give yourself as much time as you need to heal properly – both physically and emotionally. Here are some useful ideas on recovering after a car crash.
Get medical help
There are no shortcuts in the recovery process; while some injuries may require a short time to heal, others can take significantly longer if they are more severe. Plus, some symptoms, such as spinal injury or concussion, aren’t visible immediately; they may show only after days, weeks or months. So, don’t delay your visit to the doctor, as this may cause your injuries to worsen. Untreated injuries can lead to chronic pain and life-threatening internal bleeding. The sooner you seek medical help, the better it is, as your doctor can examine you and provide the necessary treatment.
Consult with a legal professional
If you’ve been involved in a car crash, it’s important to remember that you may have the right to file a claim against the driver at fault. That said, the legal process can be arduous to navigate on your own, so it’s best to seek support from a Fort Worth Car Wreck Lawyer, as they can help you understand your rights and get the most out of your compensation. Having a legal professional by your side can give you peace of mind, as you know they are acting in your best interest to ensure a positive outcome for your case.
Get enough rest
Getting enough rest is vital so that your body can heal properly. Sleep increases blood flow to your muscles and tissues, enabling growth and muscle repair. Plus, it reduces the stress hormone in your body, thus decreasing inflammation. Nothing is more important than your recovery, so it’s okay to slow down on your routine and rest as much as you need. If you push yourself too hard, your injuries can get a lot worse, so know your limits.
Take care of your mental health
It can be incredibly difficult to cope with the effects of a car crash. Besides paying for medical bills and being unable to go to work, you also have to deal with emotional trauma. Auto accidents can lead to PTSD – a mental health condition that can happen after experiencing a distressing event. If you’re struggling to cope after the accident, it’s crucial to seek help from a mental health professional, as they can help you process those difficult emotions and provide you with the resources you need to move on. Remember that it’s okay to ask for support when needed, whether from friends, family members, or a therapist. You don’t have to go through this challenging experience alone, so lean on your loved ones if you feel overwhelmed.
Last words
Recovering from a car crash can be daunting, but you can get back to your everyday life if you follow your doctor’s treatment, build a support system and get plenty of rest.
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4 Heavy-Duty and Stylish XD Wheels Perfect for Premium Electric Pickup Trucks

XD Wheels, one of the most prestigious makers of high-quality aftermarket off-road rims, has just announced fresh plans for its future. It has noted the rapid rise in the numbers of all-electric pickup trucks and SUVs and will soon launch a series of all-new wheels to cater to this segment.
XD is one of the top marquee brands owned by Wheel Pros which also owns other major names including Rotiform, Asanti, Niche, and Fuel off-road wheels. It has been around since 1995.
The electric pickup truck (also referred to as EV pickups) segment is gaining traction as bigger and better batteries and motors make their way to the market. Almost all established SUV & truck manufacturers are in a hyper-competitive mode right now: Ford, Chevrolet, Tesla- you name it.
Some of the best & most powerful EV trucks are being made by American startups like Rivian, Alpha, and EdisonFuture.
If you are fascinated with these developments & are planning to buy a premium electric pickup soon, trust these XD Wheels to deliver outstanding off-road adventures.
4 bestselling XD Wheels (2023 figures)
All models on this list are made using high-tensile, aerospace-grade 6061-T6 aluminum alloys only for improved durability and better damage resistance.
These 4 XD rims also carry a limited warranty on the finish for 1 year alongside a conditional lifetime warranty on structural integrity.
- XD822 Monster 2: This is a successor to the XD Monster, a longtime favorite of off-roading and racing enthusiasts. The 6-spoke, 20-inch matte black variant with a finely machined central hub and a concave profile is the most popular one since it looks great on any vehicle.
This off-road monster weighs just 31 pounds but has an impressive load index rating of 2500 pounds. The 20-inch XD822 has recently received a few design and structural upgrades. It has been positioned for the die-hard Ford pickup lover and is aimed squarely at the all-electric F-150 Lightning with a gigantic front trunk and around 550bhp on a good day.
You’ll require a bigger set of tires with thicker sidewalls and more rubber to go with these smaller XD Wheels for memorable cross-country drives.
- XD820 Grenade: With the Grenade, all you need to do is select the correct size for your truck and then pull the pin! This stunner is widely regarded as one of the strongest cast aluminum rims ever and has fans worldwide. While the XD Wheels Grenade is a lot more popular with Jeep and modded 4-WD vehicles, it has proven its mettle when mounted on ‘standard’ (read gasoline powered) pickup trucks too.
If you are new to the XD universe, it’s best to go for the 20-inch XD820 in a satin black finish with pronounced milling. At almost 42 pounds, it’s heavy, but that doesn’t matter when you are using a brand-new set to perk up your GMC Sierra or the bigger Cadillac Escalade.
The best part of this XD Wheels top-seller is its load index rating- a whopping 3640 pounds. That, and the mesh spoke design with exposed lip rivets, makes it a great choice for chunkier e-trucks like the 1,000bhp Hummer EV.
- XD847 Outbreak: The Outbreak retains a familiar and sophisticated 10-spoke design but with a lot more concavity than most rivals from other brands. This cast aluminum wheel can be customized to a limited extent. This includes replacing the center-cap (it’s bolted on) with another cap bearing a different color or design.
XD Wheels offers the Outbreak in several attractive colors, including an edgy blue and a milled black finish. Still, it is the 20-inch XD847 in satin black with a light grayish tint that takes pole position when it comes to sales volumes. The variant is preferred mostly by RAM 1500 and 2500 owners, and the color scheme works well with all types/sizes of SUVs.
The 20-inch Outbreak is a hefty 42 pounds and is the sole model on this list that has bits of steel included in the cast aluminum construction. The load index rating is just shy of the 3,500 pounds mark.
You can consider the XD847 Outbreak for the immensely heavy Tesla Cybertruck, with its 6 seats and a jaw-dropping 6-ton towing capability. Ensure that you have extra-toughened tires too.
- XD842 Snare: The Snare is arguably the hardiest of these 4 models here. It’s also one of the oldest existing models from the house of XD Wheels. This off-road beast is most popular with owners of high-end SUVs who don’t mind a bit of modding. That said, it has also sold in very impressive numbers in smaller cities where the Ford F-Series and the Chevy Silverado trucks still rule.
You can rely on the 20-inch XD842 Snare (preferably in the versatile matte black finish) to take you anywhere you wish. At 35 pounds, this is a lighter off-road model from XD Wheels.
This is ideal for more compact EV pickups like the Lordstown Endurance and the EdisonFuture EF1-T. Both these vehicles look straight out of a big-budget Sci-fi movie and the old-school design cues of the Snare will complement them well.
Which XD Wheels will suit an all-electric Silverado?
The all-new Chevy Silverado is launching by end-2023 in multiple variants and it’s certain to disrupt this nascent segment. Try out these XD rims for best results:
- XD859 Gunner
- XD858 Tension
- XD856 Omega
Wrapping up
Given how sought-after XD Wheels are, it’s not surprising that there are plenty of fakes in circulation across the US. These sham rims are untested and might pose danger on off-road terrain.
Procure original wheels only from reputable outlets like AudioCity USA of Santa Fe Springs, CA.
In the end, however, only you get to choose a retailer for yourself!
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What Kind of Outcomes Might I Anticipate From My Florida Automobile Accident Case?

When speaking with a lawyer for the first time in the aftermath of an accident, most persons involved in one are typically perplexed. Often, they anticipate the same kind of drama, prizes, and sense of justice that they see on television. They anticipate that the law firm will send them to a doctor of their choosing, that the lawyer will force the party at fault to pay for all of their medical bills, lost wages, and car damage, and that the lawyer will give them significant sums of money for their pain and suffering. After that, they anticipate the victim’s life will return to normal. Discuss your case with certified lawyers at Benenati Law Firm.
Sadly, this is typically not even close to what occurs in most cases involving motor vehicle accidents. Although the party at fault will indeed, in the majority of cases, pay a victim’s medical bills, lost wages, and car damage, as well as end up paying sums of money for the victim’s pain and suffering, the reality is that there are times when a victim receives very little compensation, or even none at all, for their ordeal. The lawsuits that involve substantial amounts of money are typically restricted to regrettable accidents that result in the victim’s death or in the victim sustaining life-threatening injuries.
Although most cases involving motor vehicle accidents do not include death or injuries of this severity, it is essential to note that even the most minor collisions can have profound and long-lasting effects on the lives of their victims. Regrettably, the drama that is usually exciting and interesting to watch as it unfolds on television is no longer as tempting since it has become more personal. Because a motor vehicle accident can frequently result in major physical damage, time away from work, and sometimes financial ruin for someone who was merely at the wrong place at the wrong time, the feeling of being a victim of such an event can frequently become quite overwhelming.
When a victim is innocent, they simply cannot comprehend why the law would require them to prove the extent of their injuries and damages when they have done nothing wrong to cause this difficult misfortune that has been brought upon themselves. This makes it very difficult to explain the process of a typical motor vehicle accident case to a victim. They are also quite puzzled about why the law would safeguard the rights of the side at fault. The party at blame has legal defences, and the victim who was not at fault may also have the right to recover!
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What You Should Do After a Car Accident

A car accident can be a traumatic experience. The aftermath of a car accident can also be difficult, especially if you do not follow the proper procedure at the time. If you have been in a car accident, you should get the other driver’s info, document the scene, wait for the police, hire an attorney, and file an insurance claim with the attorney’s help.
Read on to learn more about what you should do in the aftermath of a car accident.
Get the Other Driver’s Info
After determining that you and the other people involved in the crash are okay, you should get the other driver’s information. This includes their insurance company and policy number as well as their name, address, and contact info. It’s very important that you do not admit fault, even if you think the accident may have been your fault. Don’t get into an argument with the other driver if they refuse to give you their info. Tempers can flare easily after a car accident, and you want to avoid a physical altercation.
Document the Scene
After getting the necessary info, you should document the scene. This includes taking pictures of your car, the other car, and the scene itself. For example, you may want to take photos of tire marks or of parts that have fallen off your car.
Speak to the Police
You should call the Phoenix Police Department and ask them to come to the scene of the crash (unless the other driver does so). When you are speaking to the police, it is important that you give them an honest account of what happened. However, you should not admit fault for the accident, even if you believe that it was your fault. Everything that you say to the police will be reported, so you need to be careful what you say.
Hire an Attorney
It is vital to hire one of the car accident lawyers in Phoenix. This is important even if the car accident is relatively minor. There are two main reasons for this.
First, there is a chance that the other driver will sue you. This can happen even if the other driver was clearly at fault. Many uninsured drivers will file a lawsuit against the other driver to try to get money for car repairs and medical expenses. Nearly 12% of drivers in Arizona are uninsured, so there is a real chance that this will happen to you.
They may feel that this is necessary because they won’t be getting any compensation from their insurance company. You will need a lawyer to defend you in this circumstance.
You will also need a lawyer when you file your insurance claim.
File an Insurance Claim
After hiring an attorney, you should file an insurance claim. A lawyer can help you get the compensation you deserve when you have filed an insurance claim. Many insurance companies will make you a lowball offer, but an experienced attorney will help you negotiate so that you can get an acceptable offer.
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How to Track Your Vehicle During Transport

Your vehicle is essential to your life, and you want to ensure it is safe. Many people want to know where their car is during transport.
For this reason, some companies offer GPS tracking to their customers during transport. It can be an excellent service to have access to and give you peace of mind during the shipping process.
Online Tracking
Online tracking services can provide you with real-time information about the location of your vehicle. They can provide various options, including satellite tracking and cellular tracking.
While these are the least expensive and most convenient options, they only sometimes provide exact updates. They can also be prone to delays because of weather, road detours, and scheduling conflicts.
In addition to GPS, online tracking can include web bugs and browser fingerprinting. These are digital tags embedded on a website or email that report to the web manager whenever someone accesses that page.
These techniques can be used to profile people and gather their information for various purposes, including marketing and targeting ads. However, they can also harm your privacy and personal life.
While some companies, like Hawaii Car Transport, utilize these technologies to monitor their drivers, others may use them to increase driver safety and lower the likelihood of fleet accidents. Fleets using vehicle tracking and driver coaching programs may be eligible for savings from some insurance providers.
Calling the Company
When you hire a company to transport your vehicle, it’s essential to know where your car is. It can give you peace of mind and allow you to plan when your vehicle will arrive.
When a driver takes your car from its pickup location to its destination, they turn on their GPS tracking device. These devices work with a three-part system: satellites, ground stations, and receivers.
The satellites act like stars in constellations, sending signals to the ground stations monitoring them. The ground stations then relay that information to the receiver, usually a phone or other GPS-capable device.
It is a simple solution that works well for many customers. However, it’s not as immediate as a GPS tracker, requiring you to call the broker for updates.
Using a GPS Tracking App
A GPS tracking app can be an effective way to track your vehicle during transport. It can help you ensure that your vehicles arrive at their destination safely and on time.
The best GPS trackers can provide many features, such as security alerts, diagnostic trouble codes, driving reports, and more. They can also protect your fleet from theft and monitor employee driving habits.
In addition, a GPS tracking app can help you ensure that your vehicles are properly registered and in good working order. It can help you avoid costly accidents and save money on insurance premiums.
There are many GPS tracker apps available for iOS and Android devices. Some are free, while others cost a small fee per user.
Working with a Broker
A broker is a company that works with many car carriers to help people ship their vehicles. These companies usually have an extensive network of small and large truckers.
Working with a broker can be a good option for some people, but finding the right one is crucial. Look for a company that offers excellent communication and vital customer service.
They should also have a long track record and adequate insurance coverage. It will help you feel safe and secure during transport.
The main advantage of working with a broker is that it will save you a lot of time. It will also make it easier for you to track your vehicle during transport.
Another benefit of working with a broker is that they can provide you with quotes from a variety of auto transport companies. It will make it much easier to compare prices and find the best deal for your needs.
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