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PRODUCT SHOWCASE 20% Off WiFi Boards at Jaycar As part of their post-Christmas sale, Jaycar stores are offering a 20% saving on a range of their popular XC3802 WiFi Boards until 23 January. Included in the sale are: The ESP8266 WiFi Mini Mainboard <at> $19.95 (was $24.95) The ESP32 Mainboard with WiFi and Bluetooth <at> $31.95 (was $39.95) The Arduino-compatible UNO XC3800 Board with WiFi <at> $31.95 (was $39.95) and XC4411 The Arduino + WiFi Megaboard with ESP8266 chip <at> $47.95 (was $59.95). And if you’re into long range data XC4421 communications which doesn’t need a mobile phone network, they also have a big saving on the LoRa Wireless Communication shield Contact: for $49.95 (was $69.95). Jaycar Electronics (all stores) See the long distance (H/O) 320 Victoria Rd Rydalmere, NSW 2116 remote relay project at Tel: 1800 022 888 www.jaycar.com.au/ Web: www.jaycar.com.au lora-remote RayMing Technology: much more than a PCB maker! RayMing Technology is an Electronics Manufacturing Service (EMS) provider, specifically, offering PCB manufacturing and PCB assembly. EMS is a specialised form of Contract Manufacturing (CM). EMS companies allow equipment manufacturers to improve their efficiency, allowing them to focus more on Research and Development (R&D). RayMing Technology has more than 10 years of experience providing EMS services. EMS services are not only used to make consumer products, but also medical products, industrial products as well as products for defence, aerospace and telecommunications. Electronic manufac- Contact: turing is rapidly and RayMing Technology constantly evolving. You 12#, 2nd Fu’an Industrial City, Dayang Developneed a flexible partner ment Zone, Fuyong St, Bao’an, Shenzhen, China to keep pace with rapid Tel: (0011) [86] 0755 2734 8087 changes in technology. Web: www.raypcb.com Johanson Dielectrics Advanced Motor EMI Filters Strict electromagnetic compatibility (EMC) requirements and noisier electronic environments are threatening to increase the cost of filtering required for brushed DC motors. These filters must reject all forms of noise and also handle high DC currents, without being costly. Johanson Dielectrics advanced monolithic EMI filters meet these requirements. Traditional common-mode filtering approaches include lowpass filters comprised of capacitors and/or inductors that attenuate signals above the cutoff frequency. The traditional options are two-capacitor differential filters, three-capacitor filters (one X-cap and two Y-caps), feed-through filters, common-mode chokes, LC filters, or combinations of these. These days, the lower-cost options like two-capacitor or threecapacitor filters can no longer meet all EMC requirements. Other solutions like common-mode chokes offer good rejection over a wide frequency range, but are expensive when they must carry several amps. Monolithic EMI filters provide significantly more RFI suppression than a common-mode choke in a much smaller package, and they are not affected by the direct current requirement, because they connect between the lines and ground. These filters from Johanson Dielectrics combine two balanced shunt capacitors in a single package, with mutual inductance cancellation and a shielding effect. The key to their performance is the very low inductance and matched impedances. Monolithic EMI filters can be effective from 50kHz to 6GHz, filtering both common-mode and differential-mode noise. Sometimes EMI filters can interfere with PWM-based motor control, so the right filter must be chosen for the job. Johanson Dielectrics provides an on-line tool that simplifies filter choice. They are also working on integrated solutions Contact: that mount direct- Johanson Dielectrics ly on the housing, 4001 Calle Tecate, Camarillo, CA 93012, USA without the need Tel: (0011) [1] 805 389 1166 Web: www.johansondielectrics.com for a PCB. Unleash your creativity and simplify your development while saving money… The customisable Curiosity Nano Development Platform includes costeffective Curiosity Nano boards and the versatile Curiosity Nano Base for Click boards to provide you with an excellent starting point for creating innovative designs. Curiosity Nano boards feature a variety of PIC and siliconchip.com.au AVR MCUs, allowing you to easily evaluate different architectures for your design. They also offer full programming and debugging capabilities to support you throughout your development process. Each Curiosity Nano board is compatible with the Curiosity Nano Base for Click boards. This base Australia’s electronics magazine includes a socket that fits all Curiosity Nano boards plus three mikroBUS sockets that will enable you to effortlessly expand your design with sensors, connectivity modules and more. For more details visit the hotlink: Contact: Microchip (Aust/NZ) Tel: (02) 9868 6733 Website: http://siliconchip.com.au/link/aay5 January 2020  61