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Relays

pufferfish

Help needed!!

Hello, I'm looking to acquire an impulse latching relay.... I've checked RS components but can't seem to find any. The relay needs to be PCB mounted and have a low coil voltage (ideally 3v but this can be upped). Does anyone have any suppliers/links to components that match the description. 

Alternatively suggestions for how I can get an LED to come on and stay on when triggered by a standard non latching signal relay are welcomed.

Many thanks, 

Dan.

  • Hi,

    There are probably many ways to achieve what you want, but it needs more information. What is the actual use-case?

    There are quite a few circuits to implement latching capability with ordinary relays, here: http://talkingelectronics.com/projects/200T

    However, ordinarily people wouldn't use a relay to latch an LED, it's a costly and physically large solution, semiconductor methods could be used. It's unclear how you wish to turn off the LED (e.g. toggle action? or eventually self-reset? or a separate clear LED electrical input?). 

    If there was more detail on your use-case, it would be easier to help further.

  • Part of your mistake was searching on RS rather than Farnell Slight smile

    I searched latching relay on Farnell with filters for in stock and listed in ascending order of price:

    The search engine obviously looks for the word "latching" and doesn't care if the context is "non-latching", but thee are plenty of latching parts.

    The Axiom one on clearance looks like a very good buy !

    MK