The alarm lamp circuit of reliable indicators

Published:2011/7/5 8:34:00 Author:Borg | Keyword: alarm lamp, reliable indicators | From:SeekIC

In many devices, there must be the reliable alarm lamps, and it does not allow the indicator to be cut off when the machine is malfunctioning, so the circuit with device indicator can be adopted.in the circuit, if La1 is lighting, La2 won't be light, and vice versa. The parameters of the circuit can easily be changed, so the circuit can be used in other situations. For example, to replace the 820Ω resistor by a transistor of large voltage and current with a 1.5kΩ, which can be used in the 50 or 100mA current load powered by the 24V voltage.



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