In-depth Analysis: A Comprehensive Interpretation of Touch Switches

时间： 2024-05-18 来源：Kinghelm Official Website

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What Is a Touch Switch?

A touch switch, as a highly prevalent type of switch, fundamentally operates by establishing electrical connections when the user applies slight pressure. It provides users with a distinct tactile or audible "click" feedback, confirming the successful flow of current. Once released, the flow of current ceases. In essence, a touch switch is a device that offers instant responsiveness through tactile sensation, ensuring users have a clear perception of switch operation and signal flow. Additionally, there is a special type of touch switch known as a "normally closed" touch switch, which interrupts the current when pressed and restores the connection when released, offering users a more diverse range of options.

Differences Between Touch Switches and Push Button Switches

Users might mistakenly refer to touch switches as push button switches. Push button switches allow current to flow through the circuit when pressed and stop the flow when pressed again. In contrast, touch switches allow current to flow when pressed and held, and stop the flow when released, or vice versa. They are referred to as "momentary action" switches. Touch switches are typically much smaller than push button switches and, due to their design, usually carry lower voltage and current ratings.

Characteristics and Advantages of Touch Switches

Instantaneous Circuit Connection: Touch switches allow current to flow when pressed and break the circuit when released, or vice versa. This design supports rapid data input, such as on computer keyboards, or continuous operation when needed, such as motor control keyboards.

Tactile and Audible Feedback: Touch switches provide clear feedback to operators, confirming that the switch is engaged and power is flowing to the circuit. In applications like computer keyboards, they also offer satisfying physical "feel," aiding in indicating missed hits or insufficient input.

Low Power and Current Operation: Touch switches typically operate at lower power and current levels, reducing production costs and making them suitable for low-voltage devices and systems. Lower voltage also reduces arcing at the contact points.

Long Lifespan: Touch switches, due to their fewer moving parts, generally have a longer lifespan than other mechanical switches. They can be directly mounted onto circuit boards, reducing the need for maintenance. Their usage cost in products is lower compared to other types of switches.

Basic Structure and Operation of a Touch Switch

1: Cover Plate

2: Button (optional silicone)

3: Spring Leaf

4: Base

Specifications of Touch Switches:

Choosing the right touch switch entails more than just evaluating the specifications listed on the product datasheet. Touch switches, due to their "feel" and "sound," can influence users' perception of the overall product quality. This perception may be challenging to quantify.

Nevertheless, touch switches have several design specifications applicable, including:

1. Voltage Rating: (sometimes referred to as rated power) indicates the maximum voltage the switch can withstand when open or closed. Touch switches typically have lower voltage ratings.

2. Current Rating: maximum current the switch can handle before damage occurs (expressed in amperes).

3. Actuation Force: (also known as operating force) the force or pressure required to actuate the actuator on the switch (expressed in grams-force or gf).

4. Travel: the total distance traveled when pressing the switch.

5. Height: the height of the switch body.

6. Lifespan: the expected number of cycles the switch can endure under normal operating conditions.

7. Temperature Range: the temperature range within which the switch operates according to specifications.

8. Mounting Method: how the switch is mounted on the PCB, which can be through-hole or surface mount.

9. IP Rating: an international standard that classifies the protection level against dust and water ingress for switches (or other products).

Types of Touch Switches:

Touch switches come in two main types: standard (or open) and sealed. Standard touch switches lack sealing against external elements such as dust, gases, or water. Sealed touch switches, on the other hand, feature mechanical components to protect internal parts from dust and water ingress in harsh environments.

Different Types of Touch Switches Include:

- Circular/Square/Rectangular

- Flat type

- Illuminated

- Micro

- Miniature

- Right-angle

- Long-travel

- Tactile

- Switch arrays and keyboards

Wiring Touch Switches:

Touch switches typically come with 4 pins, which are internally connected into 2 sets. The purpose of using 4 pins is to provide stability when the device is mounted on a circuit board. There are also versions of touch switches with only 2 pins. Additionally, there are touch switches with 5 pins, used to provide joystick-like control in very small packages.

Applications of Touch Switches:

Due to their small size, low profile, and long lifespan, touch switches are suitable for various needs in consumer and industrial products.

Consumer Electronics: Including smartphones, remote controls, portable music players, and cameras.

Medical Devices: Touch switches are crucial for reliable operation in applications such as glucometers and other portable monitoring devices.

Industrial Control: In control panels and industrial equipment, touch switches are used for input devices and limit switches.

Computer Hardware: Touch switches are commonly used in computer peripherals such as keyboards and mice.

Home Appliances: Touch switches are commonly found on control panels for microwaves, televisions, and other home appliances.

Automotive: Inside automobiles, touch switches are used to control lighting, audio systems, and other functions.

Virtual Reality: In VR controllers and other gaming devices, touch switches provide rapid response and haptic feedback.

Conclusion:

In product design, when low-power, momentary-action power control, or data input becomes a necessary element, touch switches are undoubtedly a wise choice. Especially when tactile and auditory feedback are needed to enhance the user experience, the characteristics of touch switches make them an ideal choice.

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本文由上山打老虎转载自Kinghelm Official Website，原文标题为:In-depth Analysis: A Comprehensive Interpretation of Touch Switches，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。

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技术文档 - LITTELFUSE - 2023/3/7 PDF 英文下载

What Is A Push Button Switch Used For?

A push button switch is a crucial electrical component widely employed across various industries. These switches are designed to perform specific tasks when pressed or pushed. With their compact and user-friendly design, push button switches find applications in a multitude of devices and systems.

技术探讨发布时间 : 2023-11-13

Multi-Function Push Button Switch: Opening up a World of Infinite Possibilities

In this blog, we will delve into the mechanics of push button switches, emphasizing their important role in circuit switching and their importance in the industry. Learn how this simple yet powerful component acts as a catalyst to drive innovation forward.

技术探讨发布时间 : 2023-11-04

”Intelligent” Manufacturing--Easy to achieve automatic mould production

Flexibility is the key to staying competitive in this fast-moving industry. Reliable electrical connectors and industrial switches are one of the most important parts to control and keep the robot running safely. SUPU electronic products escort your automated production line.

原厂动态发布时间 : 2023-02-21

PhoenixContact（菲尼克斯电气）工业系统连接和自动化技术（2021新产品）选型指南

目录- Products Advantages Terminal Blocks Sensor/Actuator Cabling Connectors Software/Worker Assistance System Tools Surge Protection and Interference Suppression Filters Protective Devices Power Supplies and UPS Measurement and Control Technology Relay Modules Electronic Switching Devices and Motor Control Monitoring/Lighting and Signaling HMIs and Industrial PCs PLCs and I/O systems Functional Safety Industrial Communication Technology Charging Technology for E-Mobility

型号- 1157288,HC-M-B16-DOCK-H,1116734,1160210,QUINT4-CAP /24DC / 20 / 16KJ / PN,1116737,1115649,1116735,HC-M-B16-DOCK-B,1116736,1151617,1151618,AXL F BK PN TPS XC,1148699,1193381,1157286,1157284,1160209,1262470,1151610,QUINT4-PS / 3AC / 48DC / 20,CRIMPFOX-TC MP / LOC-1,BL2 AIO65 11 PB BOX,1227583,VAL-EV-T2 280 / 3+1,CRIMPFOX-TC MP-6,1227580,VAL-MS 230 / 3+1-PT,PLC-FA-I-5X20-12-24UC,1167192,CAPAROC PM PN,PT 2,5-MT-CLT,1262469,1274012,FL SWITCH 1004N-FX,FL SWITCH 1005N-2SFX,1274014,PTVME 6/S,QUINT4-CAP /24DC / 20 / 16KJ / EIP,QUINT4-PS /48- 110DC / 24DC /2.5 / PT,1221706,1145196,1145192,CAPAROC PM S-R,1157290,1085800,1085801,MACX MCR-EX-1TS-I-OLP-SP,1221737,1180145,TS-PTVME 6/S,1221735,1106610,1180144,1138965,1180149,1221739,FPM 15.6 69K SP,1270199,1270198,1106615,1106616,NBC-R4OC / 5,0-BC5 / R4OC,1194550,MINI MCR-2-V8-PN,1182217,CAPAROC PD 0V,1252470,1180150,PTU 4-TWIN-TG,CAPAROC E4 12-24DC / 1-4A,1115674,1252472,1115672,1193694,D-PTVME 6/S,CLT-10P / 2-2-60V-I-P,1221758,1221757,CRIMPFOX CENTRUS 6S-NC,2910124,FL SWITCH 2608 PN,1051190,HC-STA-B16 / B10-CESFD-PL-BK,1116871,1115661,SPE-T1-STSM-180,CRIMPFOX CENTRUS 6H-NC,CAPAROC E1 12-24DC / 1A,NBC-R4OC / 2,0-BC5 / R4OC,1115655,CHARX PS-M2 / 3AC / 1000DC / 30KW,FPM 17.3 69K,1115415,1115657,2910132,1115658,2910133,SPE-T1-M8MRM-90,1106707,FPM 23.8 69K,AXC F XT SPLC 1000,SPE-T1-M8MSM-180,NBC-R4ACS-R4ACS- IE8 / … / …,1130760,CM 2-PA-CLT,1105562,TP 6121-WXPS,EEM-EMMA-PC-L-Y,PTFIX 6/6X2,5-MTL,1105560,CAPAROC E1 12-24DC / 2A,1151587,STEP3-PS / 1AC / 24DC / 3.75 / PT/FL,EEM-EMMA-PC-L-M,1068857,1197100,TRIO-PS67 / 1AC / 24DC / 8 / INC,1138367,1164788,1138366,1164789,CHARX SEC-1000,1197102,TRIO-PS-2G / 1500DC / 24DC / 1.5,UNO2-PS / 1AC / 48DC / 240W,QUINT4-PS / 24DC / 24DC / 10 / PT / CO,FL SWITCH 2708,1163798,1088570,1163797,1088690,QUINT4-PS /12-24DC / 24DC /2.5 / SC,QUINT4-CAP /24DC / 20 / 16KJ / USB,1163795,1163793,SAC-5P-P12MS / 1,5-PUR / P12FR,1233779,1175448,1175449,1175447,1105559,1175445,1138377,1088573,1233777,TTC-6-1X2-TELE-UT,1077106,1077107,NBC-R4OC / 5,0-BC6A / R4OC,BL2 PPC7 1201-4 / 64-W10,PTVME 6/S-P,SPE-T1-STRM-90,EEM-EMMA-PC-M-M,MACX MCR-1TS- I-OLP,FLT-SEC-ZP2-3C-255 / 7,5,1182185,HC-M-B06-DOCK-H,AXL SE DI16 / 1 NPN,CAPAROC E2 12-24DC / 1-4A,FLT-SEC-ZP2-3C-255 / 12,5,HC-STA-B24 / B16-CESFD-PL-BK,SACB-8 / 16-5,0PUR P12 SH,EEM-EMMA-PC-M-Y,AS-WORKBENCH-F 90 US MA,FL BLE 1300,CAPAROC CR EXT20,1106500,FL SWITCH 2608,PPC 17.3 AIO 69K,AXL SE INC1 ASYM,1196228,1196227,QUINT4-PS /12-24DC / 24DC /2.5 / PT,1182190,HC-M-B06-DOCK-B,1271831,1271830,1271833,1271832,1232304,2702899,1271834,1142829,CAPAROC E1 12-24DC / 6A,PTU 4-TWIN-MT-P,1185434,BL2 PPC AIO65 7000,1201600,SPE-T1-STRM-90-LED,1091431,PTV 6-QUATTRO,CAPAROC CR 8,ELR H51-IES-24DC500AC-3-IFS,TRIO-PS67 / 1AC / 24DC / 10 / IPD,ME 6,2 TBUS-PR-ADAPTER,CHARX SEC-3100,1194398,EPC 15XX,1166809,1107892,QUINT4-PS / 24DC / 24DC / 5 / PT / CO,NBC-R4OC / 2,0-BC6A / R4OC,PTV 6-TWIN,1232243,SAC-4P-P12MS / 1,5-PUR / P12FS,1185416,1186508,1201509,1233780,1102077,CLT-10P / 2-2-24V-I-P,1118418,CHARX SEC-3000,TP 6101-WXPS,AXL E ATEX PROTECTION SET,MACX MCR-EX-1TS- I-OLP,1102079,TTC-6-1X2-TELE-PT,VAL-EV-T2 280 / 3+1-R,STEP3-PS / 1AC / 12DC / 1.3 / PT,PSR-ESS-M0-H210-2000-A,1130751,CSS 0.75-1 / 3,1185423,1130757,1183360,1186510,1199811,CRIMPFOX-C,QUINT4-PS / 1AC / 48DC / 20,RIF-RPT-LDP- 24DC / 2X2 / 2X1 / AU / FG,AXL SE SSDI8 / 3,PTV 6-PE,AS-WORKBENCH-F 90 MA,AXL F BK EIP XC,HC-M-B10-DOCK-B,1110991,1110990,NEARFI PD 2A ETH B,HC-M-B10-DOCK-H,1066708,AXL SE RTD4 PT1000,1066716,NEARFI P 2A R,1066718,UNO2-PS / 1AC / 24DC / 240W,1066714,CAPAROC E1 12-24DC / 10A,BL2 PPC10 1201-4 / 128-W10,NEARFI PD 2A ETH R,2702900,FLT-SEC-ZP2 FM-MODULE,QUINT4-PS /12-24DC / 24DC /1.3 / SC,1051204,1110984,NEARFI P 2A B,UNO-PS / 1AC / 24DC / 100W / H,1247656,1190417,1110989,1110987,1110986,1065635,1191990,1191993,1190420,116004,CHARX SEC-3150,VAL-EV-T1 / T2 264 / 12.5 / 3+1,1234224,1234225,1270203,PLC-FA-5X20,1270202,1088851,1270205,FL SWITCH 1000-8POE-GT,1088850,1270204,1234229,1234226,1247629,TRIO-PS67 / 1AC / 24DC / 10 / M12,ELR H51-IES-24DC500AC-9-IFS,1162095,CRIMPFOX-C DMCC 4P / DIE,FPM 23.8 69K SP,VAL-MS 230 / 3+1 FM-PT,FL SWITCH 1104N-SFP,EPC 1522,1247639,BL2 AIO65 9 PB BOX,2904627,FL WLAN 1010,FL WLAN 1011,CAPAROC CR EXT8,1202888,STEP3-PS / 1AC / 5DC / 3 / PT,CAPAROC CR EXT4,FLT-SEC-ZP2-3S-255 / 12,5,1202883,SPE-T1-M8MSM / 2,0-97B / M8FSF,1202882,UNO2-PS / 1AC / 24DC / 120W,1202880,1248960,1248961,CHARX SEC-3050,CLT-10P / 2-VF-230V-I-P,WIREASSIST SW1.X DONGLE,CLIPX ENGINEER,BL2 PPC 1200,1237881,1271836,CAPAROC E1 12-24DC / 1-10A,FL WLAN 2011,1139018,CAPAROC E4 12-24DC / 1-10A,FPM 15.6 69K,FL WLAN 2010,SPE-T1-M8MSM-180-SMD,1168940,1139012,1168943,2904612,2904613,1119248,1168942,1119246,CAPAROC E1 12-24DC / 1-4A,1168947,1271960,1088662,CLT-10P / 2-2-12V-I-P,1168946,1088664,EPC 1502,1088666,1088665,1087698,1271966,CLOUD CLIENT 1101T-TX / TX,ELR H51-IES-24DC500AC-3-IOL,PTFIX 6/6X2,5-TG,1186499,TC ROUTER 4102T-4G EU WLAN,1201696,1111634,QUINT4-PS / 1AC / 110D

选型指南 - PHOENIXCONTACT - 2021-03-01 PDF 英文下载