RS PRO Magnetic Pickup

An ’active’ version of the standard type (Stock no. 304-166) but incorporating an IC to provide a digital output compatible with most logic systems
Requires a peripheral speed greater than 250mm per second to operate
Rise and fall times and amplitude of the output pulse are independent of the characteristics and speed of discontinuity
Output Characteristics: With no discontinuity moving in fromt of the pole piece, the output voltage will be less than 0.15V. For each discontinuity passing the pole piece, a positive pulse will be produced. To calculate the output pulse amplitude for various loads the following relationship may be used:

V_O = V_S x R_L / (R_L + 5000)
Where
V_O = Amplitude of output pulse (Volts)
V_S = Supply voltage (volts, dc)
R_L = Load impedance (ohms)
5000 = Approximate output impedance (ohms)

Not polarity protected, any momentary reversal of the supply voltage will destroy the device.

Selecting Magnetic Pickup is essentially consisting of matching a pickup to gear (or other targets) to provide the right amount of input signal to operate at the desired minimum speed. Each type has its unique technical parameters; therefore, it is essential to choose suitable sensors at the right price and quality.
We are proudly introducing our own branded RS PRO Magneti Pickup Sensor, which is an "active" part of the standard type (RS PRO 304-166) but incorporating an IC to provide a digital output compatible with most logic systems.
Our Magnetic Pickups requires a peripheral speed greater than 250 mm per second to operate. Rise and fall times and Amplitude of the output pulse are independent of the characteristics and speed of discontinuity.

Output Characteristics: with no discontinuity moving in front of the pole piece, the output voltage will be less than 0.15V. For each discontinuity passing the pole piece, a positive pulse will be produced. To calculate the output pulse amplitude for various loads, the following relationship formula is here to help you achieve that.

VO = VS x RL / (RL + 5000)
Where
VO = Amplitude of output pulse (Volts)
VS = Supply voltage (volts, dc)
RL = Load impedance (ohms)
5000 = Approximate output impedance (ohms)

Magnetic Pickups

Miniature magnetic 'pickup' transducers are suitable for use in a wide range of sensing applications. Each device responds to the movement of ferrous parts past the pole at the end of the unit. They are used extensively in areas such as speed regulation of motors, when sensing, for example, the teeth on a gear wheel. However, magnetic pickups may be used to implement feedback and control functions in many fields. Automotive applications include crank angle sensing, ignition timing, anti-skid systems and diagnostics. Applications in the computer peripherals area encompass disc drives, line printers, card punches/readers and printer terminals. The diagrams indicate the two basic modes of using these components. Note especially their small size with their high signal output, enabling their deployment where many conventional sensors cannot be fitted. Fully encapsulated construction for reliable operation, but not intended for immersion in liquids.

Magnetic Pickups have their place to sense passing:

• teeth on a gear


• sprocket


• timing belt wheel


• to bolt-heads


• key-ways or other moving machine mounted targets

Magnetic Sensors provide high-output voltage, making ideal for heavy-duty wiring, automotive applications, such as:

• Engines


• Detecting the rotary speed of a moving part

Other fields of the Magnet include security and military applications, such as:

• Detecting


• Discrimination and localisation of ferromagnetic and conducting objects, navigation, position tracking and antitheft systems

RS PRO is our family brand to go-to and brings you a wide range for high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we are confident of their exceptional quality, which means you can be convinced too.

The Magnetic Pickup is not polarity protected; any momentary reversal of the supply voltage will destroy the device.