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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
Passive ring modulators
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Vanwonky



Joined: Jul 24, 2013
Posts: 21
Location: Perth, Australia

PostPosted: Mon Jul 07, 2014 7:01 am    Post subject: Passive ring modulators
Subject description: How to wire them up?
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Howdy All,
I am keen to give the passive ring modulator a go but my peabrain is having convulsions! It looks simple enough but I can't work out the ins and outs literally. With two inputs, two carrier and two outs I am guessing some go to ground right. Square wave on the input and carrier etc? I have looked hard but can't find any schematics that don't have a whole lot of other components buffering and whatnot.

On a bright note my Lunetta is progressing nicely and I hope to have a show and tell soon. Shocked
You probably don't believe that after posing such a simple question as above!
Cheers
Dave

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Blue Hell
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Joined: Apr 03, 2004
Posts: 20589
Location: The Netherlands, Enschede
Audio files: 148
G2 patch files: 318

PostPosted: Mon Jul 07, 2014 7:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Yeah you can ground one input, one carrier and one output pin - arbitrary which.

Thee most friendly tones come out with sines on input and carrier, but squares will work too.

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Vanwonky



Joined: Jul 24, 2013
Posts: 21
Location: Perth, Australia

PostPosted: Mon Jul 07, 2014 8:12 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Jan. I think I can handle that! Smile

Blue Hell wrote:
Yeah you can ground one input, one carrier and one output pin - arbitrary which.

Thee most friendly tones come out with sines on input and carrier, but squares will work too.
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JingleJoe



Joined: Nov 10, 2011
Posts: 878
Location: Lancashire, England
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PostPosted: Tue Aug 05, 2014 2:48 am    Post subject: Reply with quote  Mark this post and the followings unread

Is one of your diagonal diodes backwards?

Message me if you're interested in my transistor based ring modulator, I haven't tried it with analogue waves but it works perfectly with square and only uses about 5 resistors and transistors... that sounds like i mean 5 of both, i mean 5 components in total of only resistors and transistors.

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As a mad scientist I am ruled by the dictum of science: "I could be wrong about this but lets find out"


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Vanwonky



Joined: Jul 24, 2013
Posts: 21
Location: Perth, Australia

PostPosted: Tue Aug 05, 2014 6:06 am    Post subject: Reply with quote  Mark this post and the followings unread

Who could resist! PM your way.

JingleJoe wrote:
Is one of your diagonal diodes backwards?

Message me if you're interested in my transistor based ring modulator, I haven't tried it with analogue waves but it works perfectly with square and only uses about 5 resistors and transistors... that sounds like i mean 5 of both, i mean 5 components in total of only resistors and transistors.
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commathe



Joined: Jul 26, 2013
Posts: 80
Location: Beijing
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PostPosted: Tue Aug 05, 2014 7:17 am    Post subject: Reply with quote  Mark this post and the followings unread

I would also be very interested in that!
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synaesthesia



Joined: May 27, 2014
Posts: 63
Location: Germany
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PostPosted: Tue Aug 05, 2014 10:26 am    Post subject: Reply with quote  Mark this post and the followings unread

There is a circuit I found here http://staging.edn.com/design/other/4373765/Perform-the-XOR-XNOR-function-with-a-diode-bridge-and-a-transistor. Part count is higher though, so I am interested as well.

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