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Date: 24.11.15
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Success Story

Intrinsically Safe LED Torch Electronics

A leading manufacturer of intrinsically safe lamps and torches required the design and development of the electronics for a rechargeable ATEX approved torch. This had to be able to work with traditional bulbs or high-powered LED technology.

The design also had to be lightweight, have a long operational life from a single charge 

The nht design team met the challenge and produced a design that combined a wide range of in-house skills, including the design of a compact Switch Mode Power Supply (SMPS) to work on either 12-Volt or 24-Volt automotive electrical systems.

Lithium-Ion battery technology protection / charge / discharge requirements with the added requirement of intrinsic safety provided an interesting, but not an impossible, challenge.

An embedded processor based control and indication system also provided a level of flexibility to allow product variation as well as future product enhancement.

nht Services provided included:
  •     Electronic Hardware Design
  •     Embedded Software Design and Implementation
  •     Consultation with BASEEFA to meet ATEX Approvals
  •     PCB Layout
  •     Prototype Production
  •     EMC and Automotive Type Approvals
  •     Liaison with Industrial Design House for Mechanical Constraints
  •     ATE and Functional Test Development
  •     Full Scale Cell-Based Production
  •     Full Supply Chain Management
nht Manufacturing facilities employed:
  •     Surface Mount Assembly
  •     Through Hole Assembly
  •     ATE Testing for Full Manufacturing Defects Analysis
  •     Comprehensive Full Functional Testing, and
  •     Conformal Coating

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