Published:2011/4/8 2:52:00 Author:Nicole | Keyword: cap lamp, alarm | From:SeekIC
This circuit is designed by using cap lamp battery as power supply, it is fixed in mining cap. When the gas is overflow, then the headlight bulb will flash automatically, and with an alarm.
With less component, the circuit makes no difference to cap lamp normal operation, it also has the advantages of low costs, adjustable alarm point, and convenient to carry.
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