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Page 86


www.us- tech.com


June, 2019


RFMW Now Offers Qorvo Power Doubler IC


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San Jose, CA — RFMW, is now offer- ing design and sales support for a GaAs pHEMT/MESFET 75W power doubler RF amplifier IC. Qorvo’s model QPB8957 provides over 28 dB of flat gain and low noise of 4.5 dB for DOCSIS 3.1 amplifiers, headend CMTS equipment and broadband CATV hybrid modules from 47 to 1,218 MHz. Using a single 24V supply, the QPB8957 offers low noise and low distortion at high efficiency, consum- ing only 8.4W in a 0.2 x 0.3 in. (5 x 7 mm), QFN package. With CSO of 68 dBc and CTB of 75 dBc, this IC sup- ports an adjustable bias and easy inte- gration with a return loss of 18 dB. RFMW is a specialty electronics


distribution company focused exclu- sively on serving customers that require RF and microwave compo- nents and semiconductors, as well as component engineering support. The


company continues to expand its list of products from selective suppliers with RF/microwave expertise. RFMW has a highly experi-


QPB8957 power doubler RF amplifier IC.


enced, skilled and technically compe- tent team to assist customers with


component selection and fulfillment. Contact: RFMW, Ltd., 188


Martinvale Lane, San Jose, CA 95119 % 408-414-1450 E-mail: info@rfmw.com Web: www.rfmw.com


Nippon Pulse Intros New Linear Stepper Motor


Subscribe today or browse our publications www.us-tech.com


Radford, VA — Nippon Pulse has introduced its smallest linear step- per motor, the PFL20 Linearstep. The PFL20 is a highly efficient, high- thrust, tin-can linear actuator with a 0.8 in. (20 mm) diameter and a bipo- lar winding. PFL20 is RoHS-compliant, has


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    


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   


  


a 1.2/2.4 in. (30/60 mm) effective stroke, and can reach 6 N of force at 200 pps. With 24 steps per revolu- tion, the lead screw has a 0.05 in. (1.2 mm) thread pitch. The PFL20 also reaches 5V rated voltage, resistance of 33 W/phase and inductance of 12 mH/phase. The simple structure of Linear -


step motors — a threaded rotor hub and lead screw — helps to save space and reduce costs, due to fewer compo- nents needed, compared with sys- tems that convert rotary motion to linear motion. Linearstep motors are also easy to control, and can be


ordered with unipolar or bipolar windings and a variety of usable volt-


PFL20 linear actuator.


ages. In addition to the 0.8 in. (20 mm) motor size, this motor is also available in 1 in. (25 mm) (captive or non-captive option) and 1.4 in. (35


mm) diameter sizes. Contact: Nippon Pulse America,


Inc., 4 Corporate Drive, Radford, VA 24141 % 540-633-1677 E-mail: info@nipponpulse.com Web: www.nipponpulse.com


Shockwave Dispensing Controller From VERMES


Otterfing, Germany — VERMES Micro dispensing has introduced its DST (Dynamic Shockwave Technol - ogy). Through optimized channel guidance and configuration of the compression geometries, a shock- wave is generated in the actuator, which is converted into a highly dynamic linear movement, due to a special piston area in the dispenser. These features make the DST


principle suitable for its use in jet valves. The dispensing device achieves excellent system perform- ance, especially for highly viscous and difficult to dispense media. The MDS 1560 system with


DST achieves a significantly higher clock frequency than conventional dispensing systems with electro- pneumatic actuators. The MDS 1560 includes specific pressure monitor- ing, and in combination with a spe- cial integrated sensor, it ensures that the actual pressure value is continu- ously self-adjusted, pressure fluctua- tions are avoided and tappet speed is


adapted perfectly to the medium. The system can always be oper-


ated with an optimal tappet speed, adjusted to the chosen dispensing


MDS 1560 dispensing controller.


medium. Power fluctuations are com- pensated, even at very high frequen- cies. The MDS 1560 microdispensing system is suitable for a very wide range of liquid viscosities, ranging


from aqueous solutions to solder paste. Contact: VERMES


Microdispensing GmbH, Palnkamer Strasse 18, 83264 Otterfing, Germany % +49-0-80-24-644-0 E-mail: info@vermes.com Web: www.vermes.com


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