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Recent content by Brother

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    [SOLVED] Relay operate voltage variation with respect to temperature

    Thanks again for appropriate and useful information! Now, I understand, for reliable energizing the relay, we shall give minimum rated voltage independent of COLD or pre-energised state over it's operating temperature range. Thanks!
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    [SOLVED] Relay operate voltage variation with respect to temperature

    Thanks! I understand "There's a factor of e.g. 2 or 2.5 between engage and release voltage by nature of the magnetical circuit.". I would like to clarify about my question by giving example - If a relay is not energised for a long time (i.e. it is in COLD state). Suppose, now we energise it...
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    [SOLVED] Relay operate voltage variation with respect to temperature

    Thanks again for appropriate information! I have one datasheet as a reference which states that in cold state relay, over entire temperature range Operate voltage varies approximately +/- 20% of the its nominal operate voltage at 20 degree Celsius. However in pre-enegised state, operate voltage...
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    [SOLVED] Relay operate voltage variation with respect to temperature

    Thanks for appropriate information! Sorry, I forget to mention the DC coils. I interprete from the graph - Over entire temperature range Operate voltage varies approximately +/- 15% of the its nominal operate voltage at 20 degree Celsius. Over entire temperature range Release voltage varies...
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    12Vdc. operated white led torch

    Then it looks LM317 is good solution for your circuit! I think, DC-DC may not give more benifit other than size ..Also, you must be aware of DC-DC pros and cons..It does not seem to be worth for your circuit... Happy New Year to All!!!
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    12Vdc. operated white led torch

    I guess, - high efficiency dc-dc conveter will improve power efficiency and not brightness of LEDs . It will have little or no impact on brightness of LEDs as illumination mainly depends on current flowing through it. If current is switched then only illumination will be affected. There is no...
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    [SOLVED] Relay operate voltage variation with respect to temperature

    Thanks for the information! I would like to know what would be the impact of temperature. As you said, coil voltage needs to be maintained. Does it mean - relay would not be able to operate at the coil voltage at higher temperature; which used to operate at the same voltage at nominal...
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    [SOLVED] Relay operate voltage variation with respect to temperature

    Hello, Can somebody tell me about variation of relay operate voltage with respect to temperature? Has anybody experienced the failure of relay to operate due to operate voltage variation caused by temperature ? What care is to be taken while deciding operate voltage of relay ? I hope this is...
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