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A typical example of the conditioning process involves Form B reed relays. These devices contain a pair of switch contacts surrounded by a small coil of wire with a small biasing magnet next to it. When no voltage is applied to the coil, the magnet pulls the two contacts together. As voltage is applied to the coil, the field of the biasing magnet is opposed. Once the voltage reaches the proper level, the effect of the magnet is cancelled out and the contacts are able to pull apart. In spite of errors caused by the magnet strength, positioning, number of turns in the coil, and the resistance of the wire, the device can be conditioned so that the contacts open at the same specified voltage for each part. | |||||||||
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| An automated system for conditioning reed relays | ||||||||||
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