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Tuesday, November 20, 2018

Noise Gate

Here's an interesting and fairly simple noise gate circuit sent to me by Stanik Nupel from a Polish electronics book. Schematic and Stanik's original layout can be found here. The switch isn't in his original layout, so it may not be all that necessary. It'll be a tight squeeze in a 1590B, but should fit especially if you're using low profile jacks. Otherwise it'll fit nicely in a 125B with top mounted jacks.




36 comments:

  1. Seems to be an easy build, so I'm gonna give this one a try... just a simple question: what's the function of the switch?

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    1. Not sure about it. Hopefully Stanik will chime in with some info.

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  3. The switch turns off the gate and the signal runs directly.You may not mount a 470ohm resistor and omit the breaker.

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  4. what can i try instead of the bf245. will a j201 replace that?

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    1. It should be good, just note that J201 has the reverse polarity.

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  5. it looks like a simple version of a Boss NF1

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    1. It works very similarly. The 1 micro capacitors returned to each other by the minus in the scheme are tantalum. I have not tried with ordinary electrolytes and I do not know if it will work. Tantals work well.

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  6. Hi guys, Is this verified? I have tried to build it and hadn't got that sound what so ever.

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  7. You must have some mistake. Verified and works.

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    1. Thank you so much. I'll try it again.

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    2. I noticed my mistake. After it was remaking, that moved perfectly. This is great pedal. I Verified too.

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    3. I've made it but cut SUSTAIN a lot. What components should I change

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  8. I'm using google translator...

    Does this circuit work?

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  9. the pedal works, but it is making a loud noise.

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  10. Works. I added 1M resistor from T8 collector to ground to avoid pop when closing the gate.

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  11. What components should I mess with to make it a line level circuit?

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  13. Works well. Verified. Note the 1 micro capacitors. They should be tantalum.

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    3. I already made it but if sensivity wants to clean the nois d it's not full but it cuts sustain. If we turn it full at the end does the noise sound? How about this?

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    4. @Nupel I've made it but cut SUSTAIN a lot. What components should I change?

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    5. @Nupel I've made it but cut SUSTAIN a lot. What components should I change

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    6. @Nupel I've made it but cut SUSTAIN a lot. What components should I change

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  14. Could i use a500k instead of b500k?

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  15. Might try this one after a successful mxr noise gate built.for the fet i will use 2sk118 .this jfet did the job well in my mxr NG .
    Kuddos to this thread!
    Jun fr Philippines

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  16. Its verified!got a minor parts change namely 22uf to 4.7uf and output current limiting resistor 1k to 600ohms.works very well!tnx.
    Jun fr Philippines

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  17. The schematic link is dead, do you have another one?

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