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LPRS Managing Director, shortlisted in the “Strategic Mentors Business Person of the Year”

LPRS Managing Director, John Sharples, is one of three finalists shortlisted in the “Strategic Mentors Business Person of the Year” category as part of the “West Oxfordshire Business Awards”. (www.woba.co.uk) The winner will be announced at a formal award ceremony in March.

David Cameron visits LPRS

It has been a year of dramatic change at LPRS, the UK based supplier of short range radio devices and sensors, from the launch of the company’s third generation of successful easyRadio modules to a complete review of the company’s cost base from manufacturing to marketing. This on-going success has been noted and drew the attention of local MP and Prime Minister, David Cameron, who paid the company’s offices in Witney, Oxfordshire, a visit at the end of last month.

LPRS announces two key appointments to support continued sales growth

LPRS, Europe’s leading supplier of short-range radio devices, announces the appointment of Sandie Sharples to the board of directors to take on the role of Client Services Director. This new position reflects the great importance LPRS puts on customer service, from design to delivery and beyond. Sandie comments: “Our customer surveys show that it is our service that really sets us apart from our competitors. We can assist our customers with design, implementation and manufacturing and like to be full partners in every project we undertake.” Sandie will manage key accounts and oversee the recruitment of additional distributors worldwide to further grow sales of their UK designed and manufactured market leading eRA wireless communication modules.

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Light Sensors

Used for light sensing applications. By using Cadmium Sulfide, it offers high sensitivity to illumination applicable for switching automatic devices.

Inexpensive cadmium sulfide cells can be found in many consumer items such as camera light meters, street lights, clock radios, alarms, and outdoor clocks.

They are also used in some dynamic compressors together with a small incandescent lamp or light emitting diode to control gain reduction.

Lead sulfide (PbS) and indium antimonide (InSb) LDRs (light dependent resistor) are used for the mid infrared spectral region. Ge:Cu photoconductors are among the best far-infrared detectors available, and are used forinfrared astronomy and infrared spectroscopy.

What is a photocell?

Photocells are sensors that allow you to detect light. They are small, inexpensive, low-power, easy to use and don't wear out. For that reason they often appear in toys, gadgets and appliances. They are often referred to as CdS cells (Cadmium-Sulfide), light-dependent resistors (LDR), and photoresistors.

Photocells are basically a resistor that changes its resistive value (in ohms Ω) depending on how much light is shining onto the squiggly face. They are very low cost, easy to get in many sizes and specifications, but are very innacurate. Each photocell sensor will act a little differently than the other, even if they are from the same batch. The variations can be really large, 50% or higher! For this reason, they shouldn't be used to try to determine precise light levels in lux or millicandela. Instead, you can expect to only be able to determine basic light changes.

For most light-sensitive applications like "is it light or dark out", "is there something in front of the sensor (that would block light)", "is there something interrupting a laser beam" (break-beam sensors), or "which of multiple sensors has the most light hitting it", photocells can be a good choice!

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