Aug 18 2013, 08:47 PM, updated 13y ago
V1: https://forum.lowyat.net/topic/1610986
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Dome Switch
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Dome switch keyboards are a hybrid of flat-panel membrane and mechanical keyboards. They bring two circuit board traces together under a rubber or silicone keypad using either metal "dome" switches or polyester formed domes. The metal dome switches are formed pieces of stainless steel that, when compressed, give the user a crisp, positive tactile feedback. These metal types of dome switches are very common, are usually reliable to over 5 million cycles, and can be plated in either nickel, silver or gold. The rubber dome switches, most commonly referred to as polydomes, are formed polyester domes where the inside bubble is coated in graphite. While polydomes are typically cheaper than metal domes, they lack the crisp snap of the metal domes, and usually have a lower life specification. Polydomes are considered very quiet, but purists tend to find them "mushy" because the collapsing dome does not provide as much positive response as metal domes. For either metal or polydomes, when a key is pressed, it collapses the dome, which connects the two circuit traces and completes the connection to enter the character. The pattern on the PC board is often gold-plated.
Scissor Switch
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A special case of the computer keyboard dome-switch is the scissor-switch. The keys are attached to the keyboard via two plastic pieces that interlock in a "scissor"-like fashion, and snap to the keyboard and the key. It still uses rubber domes, but a special plastic 'scissors' mechanism links the keycap to a plunger that depresses the rubber dome with a much shorter travel than the typical rubber dome keyboard. Typically scissor-switch keyboards also employ 3-layer membranes as the electrical component of the switch. These stabilizing scissor-like devices extend the lifespan of the membrane to as much as 10 million keystrokes. They also usually have a shorter total key travel distance (2 mm instead of 3.5 – 4 mm for standard dome-switch keyswitches). This type of keyswitch is often found on the built-in keyboards on laptops and keyboards marketed as 'low-profile'. These keyboards are generally quiet and the keys require little force to press. Scissor-switch keyboards are typically slightly more expensive. They are harder to clean (due to the limited movement of the keys and their multiple attachment points) but also less likely to get debris in them as the gaps between the keys are often less (as there is no need for extra room to allow for the 'wiggle' in the key as you would find on a membrane keyboard).
Mechanical Keyboard Switches(All below are Mechanical Keyboard Switch)
Introduction - A Switch is Not "Just a Switch"
Many people ask for recommendations about switches without knowing exactly what they are looking for, but instead only with an idea of what their needs are. Fortunately, this is not always a problem because most mechanical switches will always feel nicer than rubber domes. However, the final choice is very important because a switch is not just a switch; it is the heart of what makes your keyboard have its feel and your personal tastes can make or break a keyboard for your uses. If you don't like the switch when you type on it, most likely, you won't ever like the keyboard.
Switches are generally rated by force using the weight measurement of Grams (g). Although force is more accurately described using Centinewtons (cN) However, 1g of weight applies about 1cN of downward force, so we can use "55g" when describing a 55cN-rated switch because that is sometimes easier to understand. For this fact; we'll use Grams as a measurement of force; though either term is correct.
Cherry MX Green
Type: Tactile & Clicky Switch
Tactile: Yes
Clicky: Yes
Activation force: 80 g
The Cherry MX Green is a stiffer version of the Cherry MX Blue, meant for space bar usage
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=>Unlike most other Cherry MX switches, the plunger consists of not one, but two parts: a green plunger (that is connected to the key) and a white inner slider (which opens/closes the circuit). The movement of the inner slider is constrained by the green plunger, which can pull the slider up or push it down.
=>At rest, the inner slider is held by the leaf spring. The green plunger does not push on the slider until close to the activation point.
=>At the activation point, the green plunger has pushed the white slider out of rest into a position where the force of the leaf spring on the slider's inclined plane will propel the slider towards the bottom. The leaf spring encounters no more resistance from the slider and closes the circuit. Because the green plunger is no longer pushing on the white slider, the key resistance decreases sharply.
=>The "click" sound is made by the white slider hitting the bottom of the switch housing. The force of the leaf spring on the slider is high enough to make the switch function in any orientation.
=>At rest, the inner slider is held by the leaf spring. The green plunger does not push on the slider until close to the activation point.
=>At the activation point, the green plunger has pushed the white slider out of rest into a position where the force of the leaf spring on the slider's inclined plane will propel the slider towards the bottom. The leaf spring encounters no more resistance from the slider and closes the circuit. Because the green plunger is no longer pushing on the white slider, the key resistance decreases sharply.
=>The "click" sound is made by the white slider hitting the bottom of the switch housing. The force of the leaf spring on the slider is high enough to make the switch function in any orientation.
Cherry MX Black Switches
Type: Linear Switch
Tactile: No
Clicky: No
Actuation Force: 60g (40g-80g overall)
Key Travel: 2mm to actuation, 4mm to bottom
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=>Cherry MX-Black switches are linear (non-tactile) switches, these are considered one of the best switch types for gaming. When gaming, having a tactile bump does absolutely nothing because you're going to be bottoming out anyway. So these give you a very smooth feel. The actuation and release points are at the exact same position as well. So games that require a lot of double tapping become easier than on any other keyswitch. However, most people don't enjoy typing on them that much do in part, to their linear nature.
=>If you're a person who tends to hit a wrong key every so often while gaming, these will be beneficial in that the high actuation force will help prevent many of those accidental presses.
=>If you're a person who tends to hit a wrong key every so often while gaming, these will be beneficial in that the high actuation force will help prevent many of those accidental presses.
Cherry MX Brown Switches
Type: Tactile Switch
Tactile: Yes
Clicky: No
Actuation Force: 45g (55g Peak Force)
Key Travel: 2mm to actuation, 4mm to bottom
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=>Cherry MX Brown switches are considered a middle ground between typing and "gaming" switches. They have a light, tactile feel half way through the key press that lets you know the switch has activated. This gives you an indication of what you can release the switch. The switch is considered a middle ground because the reset point & actuation point are close enough together than you can "float" at that point, enabling you to double tap faster.
=>As a note: this switch actually has a peak force of 55G, it is 45G at the point of actuation. This is due to the design of the Cherry switch itself.
=>As a note: this switch actually has a peak force of 55G, it is 45G at the point of actuation. This is due to the design of the Cherry switch itself.
Cherry MX Blue Switches
Type: Tactile & Clicky Switch
Tactile: Yes, precise
Clicky: Yes
Actuation Force: 50g (60g Peak Force)
Key Travel: 2mm to actuation, 4mm to bottom
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=>Cherry MX Blue switches are the best cherry switch for typing. The tactile bump can easily be felt, and the resistance is similar to your average keyboard.
=>Although many people find them just fine for gaming, some don't like the fact that the release point is above the actuation point. This can cause some trouble with double-tapping. This is usually the case with someone who has experienced other mechanical switches before hand.
=>As a note: this switch actually has a peak force of 60g, it is 50g at the point of actuation. This is due to the design of the Cherry switch itself.
=>Although many people find them just fine for gaming, some don't like the fact that the release point is above the actuation point. This can cause some trouble with double-tapping. This is usually the case with someone who has experienced other mechanical switches before hand.
=>As a note: this switch actually has a peak force of 60g, it is 50g at the point of actuation. This is due to the design of the Cherry switch itself.
Cherry MX Clear Switches
Type: Tactile Switch
Tactile: Yes
Clicky: No
Actuation Force: 55g (65G peak force)
Key Travel: 2mm to actuation, 4mm to bottom
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=>Cherry MX Clear switches have often been called "stiffer browns" though some users note that they have more of a tactile feel than browns do. This really can be a subjective topic, though this is another switch that could be considered "ballanced." The force required is comparable to most rubber dome keyboards, with a nice tactile feedback to tell you the key has actuated. These switches are harder to find on keyboards.
=>As a note: this switch actually has a peak force of 65g, it is 55g at the point of actuation. This is due to the design of the Cherry switch itself.
=>As a note: this switch actually has a peak force of 65g, it is 55g at the point of actuation. This is due to the design of the Cherry switch itself.
Cherry MX Red Switches
Type: Linear Switch
Tactile: No
Clicky: No
Actuation Force: 45g
Key Travel: 2mm to actuation, 4mm to bottom
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=>Cherry MX-Red's are another switch that can be considered a "gaming" switch. It's essentially a lighter version of the MX Black, requiring less force to actuate. Most people do not find this switch that good for typing or gaming because it is so light. This switch is hard to find; and was reported as obsolete. Though some board makers still use it for Special Edition keyboards.
Buckling Spring Keyswitches
Type: Tactile & Clicky Mechanical Switch
Tactile: Yes, very precise
Clicky: Yes, loud
Actuation Force: 65g-70g
Key Travel: 2.3mm to actuation, 3.7mm to bottom
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=>Buckling springs are pretty straightforward once you see them in action. After pushing the key down a certain distance the spring buckles under pressure, causing the hammer at the bottom to hit a membrane sheet and create an electrical contact. The buckling of the spring also provides tactile feedback and a satisfying click as it hits the shaft wall. And you might also notice through the force diagrams that this is the only mechanical switch where the tactile and audible feedback correspond to the exact moment the switch actuates.
Black Alps
Type: Tactile Mechanical Switch
Tactile: Yes
Clicky: No
Actuation Force: Simplified 60g, Complicated 70g
Key Travel: 3.5mm
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=>Black Alps are one of the two most common Alps switch types. Many people do not like these switches due to the fact that they are stiff, bottom out hard, and tend to develop friction in the travel as they wear. Nonetheless, they are an improvement over most rubber dome keyboards.
=>There are two different types of Black Alps switch - an older type known as the "Complicated" due to the large number of parts in the switch, and a newer type known as the "Simplified", which was manufactured by Alps and some other companies. Complicated switches are common in many older keyboards, particularly the Dell AT101W, which is a very common mechanical keyboard from the 1990s.
=>The most well known Simplified Black switch is made by a company called Fukka, and was used in the ABS M1. The Fukka switch has less resistance, but many claim that it provides less solid tactility than the complicated switch.
=>There are two different types of Black Alps switch - an older type known as the "Complicated" due to the large number of parts in the switch, and a newer type known as the "Simplified", which was manufactured by Alps and some other companies. Complicated switches are common in many older keyboards, particularly the Dell AT101W, which is a very common mechanical keyboard from the 1990s.
=>The most well known Simplified Black switch is made by a company called Fukka, and was used in the ABS M1. The Fukka switch has less resistance, but many claim that it provides less solid tactility than the complicated switch.
White Alps
Type: Clicky & Tactile Mechanical Switch
Tactile: Yes
Clicky: Yes
Actuation Force: 60g-70g
Key Travel: 3.5mm
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=>White Alps are one of the most most common Alps switch types. These are far more popular than the Black switches due to more pronounced tactility, and the lower force requirements of some versions. Like the Black Alps, White Alps are much easier to bottom out on compared with other mechanical keyswitch designs.
=>As with the Black switch. there are Complicated and Simplified White switches. The two most popular Simplified White switches are the Fukka and the XM. The XM is almost universally considered to be a terrible switch, it was used on some older Filco Zero models, and some vintage keyboards. The Fukka switch is quite popular, and some people prefer them over the Complicated switch. It is used on some current production Alps keyboards such as current production Filco Zeros, Matias keyboards and some others. Complicated White switches were used on some well made keyboards from the 90s such as the Northgate and Focus keyboards.
=>There are also a variety of White Alps-like switches of varying quality. Some, like the SMK Monterey, are considered very pleasant to type on..
=>As with the Black switch. there are Complicated and Simplified White switches. The two most popular Simplified White switches are the Fukka and the XM. The XM is almost universally considered to be a terrible switch, it was used on some older Filco Zero models, and some vintage keyboards. The Fukka switch is quite popular, and some people prefer them over the Complicated switch. It is used on some current production Alps keyboards such as current production Filco Zeros, Matias keyboards and some others. Complicated White switches were used on some well made keyboards from the 90s such as the Northgate and Focus keyboards.
=>There are also a variety of White Alps-like switches of varying quality. Some, like the SMK Monterey, are considered very pleasant to type on..
Topre Key Switches
Type: Tactile Capacitive Switch
Tactile: Yes
Clicky: No
Actuation Force: 30g, 35g, 45g, 55g depending on model
Key Travel: 4mm
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=>Topre switches are somewhat of a hybrid switch, and are capacitive by nature. The Topre mechanism uses a spring underneath a rubber dome, and the depression of the spring causes a change in capacitance between the underlying capacitor pads. With this change in capacitance; the switch activates.
=>Topre, (formerly named Tokyo Press Kogyo), is an electrical, plastics, and metal materials manufacturer based in Japan. A leader in industrial credit card readers, touch sensors, and touch panels; Topre's key switches are used in critical data-entry applications that require the utmost reliability
=>Topre Switches are considered some of the finest switches available, as they offer a very enjoyable typing experience with a quieter experience compared to a Cherry MX, Alps, or Buckling Spring switch. The reason is Topre switches have the smoothest force gradient even compared to Linear switches like MX-Reds and MX-Blacks.
=>Topre, (formerly named Tokyo Press Kogyo), is an electrical, plastics, and metal materials manufacturer based in Japan. A leader in industrial credit card readers, touch sensors, and touch panels; Topre's key switches are used in critical data-entry applications that require the utmost reliability
=>Topre Switches are considered some of the finest switches available, as they offer a very enjoyable typing experience with a quieter experience compared to a Cherry MX, Alps, or Buckling Spring switch. The reason is Topre switches have the smoothest force gradient even compared to Linear switches like MX-Reds and MX-Blacks.
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