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Author Topic: Shure Bias-tee circuit  (Read 550 times)

Doug Boyd

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Shure Bias-tee circuit
« on: February 25, 2020, 06:01:01 am »

Hi,

Several years ago Shure had a helpful DIY circuit for a bias-tee for powering active antenna.  I had found it on the Shure Customer Help knowledge base but the link I had is no longer valid.

Pretty sure it was a minimalist circuit with an one inductor and blocking cap.

Don't suppose anyone has a copy of this? Or anything similar - I'd purchase a commercially made unit but am up against it time wise.

Thanks,

Doug
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Jordan Wolf

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Re: Shure Bias-tee circuit
« Reply #1 on: February 26, 2020, 10:33:35 pm »

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Jordan Wolf
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"We want our sound to go into the soul of the audience, and see if it can awaken some little thing in their minds... Cause there are so many sleeping people." - Jimi Hendrix

Russell Ault

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Re: Shure Bias-tee circuit
« Reply #2 on: February 27, 2020, 02:07:15 am »

[...] I had found it on the Shure Customer Help knowledge base but the link I had is no longer valid.

Did you try the Internet Archive? What was the link?

-Russ
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Doug Boyd

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Re: Shure Bias-tee circuit
« Reply #3 on: March 02, 2020, 04:43:30 am »

Here you go.

Thanks, but that's an off the shelf Bias T.  I was looking for the inductor & cap values that was previously available on Shure's customer help page to make my own.

Doug
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Henry Cohen

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Re: Shure Bias-tee circuit
« Reply #4 on: March 02, 2020, 09:30:32 pm »

Thanks, but that's an off the shelf Bias T.  I was looking for the inductor & cap values that was previously available on Shure's customer help page to make my own.

https://www.qsl.net/in3otd/electronics/bias_tee/bias_tee.html

Don't be fooled by the simple schematic representation often used to illustrate a bias-T circuit containing merely an inductor and capaitor; it's far more complex, especially concerning the inductors (generally a series of two to four based on frequency range and capacitors chosen).
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Henry Cohen

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Re: Shure Bias-tee circuit
« Reply #4 on: March 02, 2020, 09:30:32 pm »


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