Rotary sensors based on magneto-resistive compounds

23 March 2005 Passive Components

Murata offers non-contact sensors based on its own magneto-resistive InSb elements and custom miniaturised circuitry. These provide analog single and digital dual phase outputs. Index phase sensing of target gears, direction and rotational speed and number of gear teeth can all be sensed.

The principle of operation is simple. As magnetic material moves over the face of the sensor, the magnetic flux distribution across internal magnetoresistors varies. This in turn creates a resistance change in the MR elements, which creates a sinusoidal output. When the sensor is placed close to a magnetic gear, the sensor outputs a signal that is synchronised to the rotation of the gear with the number of peaks being proportional to the number of teeth passing over the sensor.

Applications served by these sensors include: motor control in factory automation, linear motion servo direction, servo motor and linear motion in NC machines, robot arms and injection speed of moulding machines.

Further reading:

PCB connectors for power systems
Phoenix Contact Passive Components
With the new PC 6 PCB connectors with screw connection, Phoenix Contact’s classic connection technology is available with enhanced touch protection for the new pin connector pattern.

Read more...

---

Polymer caps with very high ripple current capability
RS South Africa Passive Components
TDK Corporation has released the B40910 series of hybrid polymer capacitors, which can handle up to 4,6 A at 100 kHz and 125°C.

Read more...

---

SPE connector range
Phoenix Contact Passive Components
Single Pair Ethernet (SPE) is a communication technology that realises Industry 4.0 and IIoT applications, and Phoenix Contact’s Combicon range are ideal for SPE connections.

Read more...

---

TDK expands MLCC series
RS South Africa Passive Components
TDK Corporation has expanded its CGA series of multilayer ceramic capacitors, currently being the highest capacitance in 100 V products for automotive applications.

Read more...

---

Inductor supports temperatures up to 150°C
RS South Africa Passive Components
TDK has launched a highly durable inductor for automotive A2B applications that supports a wide temperature range of -55 up to 150°C.

Read more...

---

Long-range passive infrared motion sensor
Future Electronics Passive Components
Panasonic Industry (PaPIRs) recently introduced he world’s most compact long-range passive infrared motion sensor, for installation heights of up to 15 metres.

Read more...

---

Isolated solid state relay
Altron Arrow Passive Components
The ISO808, ISO808-1 (PowerSO-36) and ISO808Q, ISO808Q-1 (TFQFPN32) are galvanic isolated eight-channel drivers featuring a low supply current.

Read more...

---

Low-profile power inductors
RS South Africa Passive Components
TDK Corporation has announced the introduction of its new PLEA85 series of high-efficiency power inductors developed for battery-powered wearables and other devices.

Read more...

---

Miniature capacitor for automotive applications
Avnet Abacus Passive Components
Murata has released its LLC series of multi-layer ceramic capacitors for automotive applications, that feature a reversed termination for low ESL.

Read more...

---

Sealed tantalum capacitors
Electrocomp Passive Components
With an operating temperature range of -55 to 125°C, with voltage derating, these capacitors have been designed especially for avionics and aerospace applications.

Read more...

---