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volt.tech Latest Questions

vikas Nagpal
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vikas Nagpal
Asked: January 30, 2023In: LEDs & Optoelectronics

Can LED2472G be applied as a shift register to drive signal relays?

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Hello, Can LED2472G be applied as a shift register to drive signal relays with a coil current of <30mA? Can they be applied as general shift registers too? Thanks!

Hello,

Can LED2472G be applied as a shift register to drive signal relays with a coil current of <30mA? Can they be applied as general shift registers too?

Thanks!

Read less
ledled2472goptoelectronicsregistersignal relays
  1. Alex thomas
    Added an answer on January 31, 2023 at 11:57 am

    Welcome, to the community! Well, LED2472G is a move register, but it can simply be used as similar to a limited extent the individual outputs (bits) are actually constant-current LED drivers, so they aren't actually able for sense purposes. But of course, you can control the loads connected to the iRead more

    Welcome, to the community!

    Well, LED2472G is a move register, but it can simply be used as similar to a limited extent the individual outputs (bits) are actually constant-current LED drivers, so they aren’t actually able for sense purposes. But of course, you can control the loads connected to the individual outputs logically in the same way as a shift register. Only the serial output is directly similar to a classic shift register.

    Still, one could imagine using LED2472G to drive 30mA relays, indeed if this doesn’t correspond to the original purpose. But you mustn’t forget the usual free-wheeling diodes, which due to the unspecified avalanche energy should better be Schottky diodes because only they’re fast enough. Evenultra-fast diodes with a blocking time of 10.20 ns are probably too slow not to damage the respective LED driver- at least nothing guarantees that.

    Does it answer your question?

    Regards

    Alex

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