Capacitive, Magnetic and Piezo Switches

Capacitive, Magnetic, and Piezo Switches are types of electronic switches that operate based on different principles. Let's explore each of them:

  1. Capacitive Switches: Capacitive switches use the principle of capacitance to detect touch or proximity. They typically have a touch-sensitive surface that acts as one plate of a capacitor, while the other plate is usually a ground plane or a separate electrode. When a conductive object, such as a finger, comes close to or touches the touch-sensitive surface, it changes the capacitance, which is then detected by the switch's electronics. Capacitive switches are commonly used in touchscreens, touch-sensitive buttons, and proximity sensors.
  2. Magnetic Switches: Magnetic switches, also known as magnetic reed switches, use the presence or absence of a magnetic field to control the switch's operation. They consist of two metal reeds that are hermetically sealed within a glass tube. Each reed contains magnetically sensitive material. When a magnetic field is applied near the switch, the reeds are attracted to each other, and the switch closes, allowing current to flow. When the magnetic field is removed, the reeds separate, and the switch opens. Magnetic switches are often used in applications such as security systems, door and window sensors, and proximity sensors.
  3. Piezo Switches: Piezo switches utilize the piezoelectric effect to convert mechanical stress or pressure into an electrical signal. They consist of a piezoelectric material, such as certain crystals or ceramics, that generates an electric charge when subjected to mechanical deformation. When pressure or force is applied to the switch, it causes the piezoelectric material to deform, generating an electrical signal. This signal can be used to trigger a switching action. Piezo switches are commonly found in applications where a robust and reliable switch is required, such as industrial control panels, medical equipment, and automotive applications.

Each type of switch has its own advantages and limitations. Capacitive switches offer touch-sensitive and non-mechanical operation but may be affected by moisture or dirt. Magnetic switches are highly reliable and can operate in harsh environments but require the presence of a magnetic field. Piezo switches are durable and can withstand high forces, but they require mechanical pressure to operate and are typically more expensive.

Capacitive Switches
Capacitive Switches
Hall Effect Switches
Hall Effect Switches
Piezo Switches
Piezo Switches
Reed Switch Magnets
Reed Switch Magnets
Reed Switches
Reed Switches
Thumbwheel Switches
Thumbwheel Switches

1029 產品顯示為 Capacitive, Magnetic and Piezo Switches

排序方式
7 的 52
暫時無法供應
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS庫存編號 188-0478
  • 製造零件編號 OHD3-80B
小計（1 托盤，共 100 件）
HK$3,900.00
HK$39.00/件
有庫存
Siemens Magnet for use with Contact Block
  • RS庫存編號 155-941
  • 製造零件編號 3SE6701-2BA
小計（1 件）
HK$878.80
HK$878.80/件
暫時缺貨
RS PRO Piezo Switch, Momentary, IP68, 1A, 65 °C, -20 °C
  • RS庫存編號 175-9533
小計（1 包，共 1 件）
HK$378.80
HK$378.80/包
暫時缺貨
RS PRO Illuminated Piezo Switch, Momentary (NO), SPST, IP69 Flexible Wire, 200mA, 75 °C, -20 °C Natural
  • RS庫存編號 259-1140
小計（1 件）
HK$656.21
HK$656.21/件
有庫存
APEM Piezo Switch, Momentary, SPST, IP68 Wire, 200mA, 75 °C, -40 °C Natural
  • RS庫存編號 224-344
  • 製造零件編號 PBAR2AF0000
小計（1 件）
HK$488.40
HK$488.40/件
有庫存
APEM Piezo Switch, Momentary, SPST, IP68 Flying Lead, 200mA, 75 °C, -40 °C
  • RS庫存編號 691-9644
  • 製造零件編號 PBAR9AFB000
小計（1 件）
HK$395.10
HK$395.10/件
有庫存
RS PRO SPCO Through Hole Reed Switch 1 A 250 V
  • RS庫存編號 265-2285
小計（1 包，共 5 件）
HK$117.10
HK$23.42/件
暫時缺貨
KEMET SPST Through Hole Reed Switch 100 mA 30 V dc
  • RS庫存編號 188-0946
  • 製造零件編號 OHD5R-130B
小計（1 件）
HK$48.80
HK$48.80/件
有庫存
KEMET SPST Through Hole Reed Switch 300 mA 110 V ac/dc
  • RS庫存編號 188-0806
  • 製造零件編號 OHD3-80M
小計（1 件）
HK$53.60
HK$53.60/件
暫時無法供應
DiodesZetex Hall Effect Sensor 4 mA 60 mA Omnipolar Surface Mount Open Drain Maintained, 105 °C, -40 °C, 28V dc, 3 V dc
  • RS庫存編號 246-6555
  • 製造零件編號 AH3564Q-SA-7
小計（1 卷，共 3000 件）
HK$8,202.00
HK$2.734/件
有庫存
RS PRO Capacitive switch Latching, Momentary Illuminated, RGB, NPN, IP68
  • RS庫存編號 175-9517
小計（1 包，共 1 件）
HK$528.50
HK$528.50/包
暫時缺貨
APEM Capacitive switch Momentary Momentary, Latching Illuminated, Green, Red, NPN, IP69K, IP68 Capacitive
  • RS庫存編號 205-8736
  • 製造零件編號 CPB1110000NGSS
小計（1 件）
HK$404.30
HK$404.30/件
製造商存貨
WIKA SPST Through Hole Magnetic Reed Switch 1 A 230 V
  • RS庫存編號 267-6375
  • 製造零件編號 48797683
小計（1 件）
HK$818.43
HK$818.43/件
有庫存
APEM IP67 Pre-Wired Thumbwheel Switch Surface
  • RS庫存編號 693-2372
  • 製造零件編號 HTW-02-BLU
小計（1 件）
HK$881.60
HK$881.60/件
有庫存
Schurter Piezo Switch, IP67 Solder, 100mA, 60 °C, -20 °C Red
  • RS庫存編號 456-1874
  • 製造零件編號 1241.2411.3
小計（1 件）
HK$342.70
HK$342.70/件
有庫存
APEM Piezo Switch, Momentary, SPST, IP68 Through Hole, 200mA, 75 °C, -40 °C
  • RS庫存編號 691-9477
  • 製造零件編號 PBAT5AF2000
小計（1 件）
HK$309.40
HK$309.40/件
有庫存
Bulgin Capacitive switch Momentary NO Illuminated, Green, Red, On-Off, IP68, IP69K Black Anodised
  • RS庫存編號 208-8023
  • 製造零件編號 MC25MOBRG
小計（1 件）
HK$465.80
HK$465.80/件
有庫存
Assemtech SPST PCB Reed Switch 500 mA 170 V
  • RS庫存編號 909-2676
  • 製造零件編號 RI-70C
小計（1 袋，共 10 件）
HK$159.10
HK$15.91/件
有庫存
RS PRO SPCO Through Hole Reed Switch 500 mA 175 V
  • RS庫存編號 265-2246
小計（1 件）
HK$31.10
HK$31.10/件
有庫存
Littelfuse PCB Reed Switch 0.5 A 200 V
  • RS庫存編號 905-8913
  • 製造零件編號 MDSR-10-10-15
小計（1 袋，共 5 件）
HK$52.40
HK$10.48/件
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