by Mat Dirjish
Promising to deliver high accuracy and stability while reducing costs, Vishay Intertechnology’s 34 PHE multi-turn absolute position sensor employs non-contacting Hall Effect technology. Residing in a package measuring 7/8 in. (22.2 mm) in diameter, the component specifies a linearity down to ±1% full stroke, resolution of 1°, and a lifespan greater than 10 million cycles.
Offering linear or rotary displacement tracking with a total electrical angle of 3,600° across 10 turns, the 34 PHE is available at a 40 % lower cost than its previous generation. Other features include IP65 sealing, the ability to withstand high frequency vibrations up to 2 g and shocks up to 50g, and reverse voltage and overvoltage input protections of -14 Vdc and +28 Vdc, respectively. An integrated locating peg on the mounting face promises to simplify installation while preventing rotation.
The 34 PHE reports its position immediately upon power-up without requiring recalibration, re-homing, or initialization routines even after a power loss, thereby eliminating the need for a battery backup. It operates with a supply voltage of 5 Vdc ±10% and a supply current of less than 8.5 mA typical. Recommended load resistance is 1 kΩ for both analog and PWM output.
Samples and production quantities of the 34 PHE are available now, with lead times of 14 weeks. For greater gleanings, procure and peruse the 34 PHE datasheet.
Mat Dirjish Online 