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General Vintage Technology Discussions For general discussions about vintage radio and other vintage electronics etc. |
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20th May 2023, 4:17 pm | #1 |
Nonode
Join Date: Aug 2007
Location: Walsall Wood, Aldridge, Walsall, UK.
Posts: 2,853
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Tool to draw Ring Modulator Waveforms?
Does anyone know of a free tool that will display graphically the results of multiplying two different frequency inputs, such as those in the double balanced mixer or Ring Modulator?
I'm looking for something where I can specify two sinusoids as normal time functions and calculate their sum, difference or product and display the result as a graph I can export, for use in my T & M Theory and Repair book's chapters on Spectrum Analysers! These waveforms are too difficult to draw easily by hand! Chris Williams
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20th May 2023, 5:21 pm | #2 |
Moderator
Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 22,798
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Re: Tool to draw Ring Modulator Waveforms?
Knock up a quick circuit in LT Spice. You can type in equations for a BV (behavioural voltage source) It will give you outputs as waveforms, spectra etc.
David
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20th May 2023, 7:11 pm | #3 |
Hexode
Join Date: Jun 2018
Location: Buckinghamshire, UK.
Posts: 381
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Re: Tool to draw Ring Modulator Waveforms?
Here's an on-line graphic calculator:-
https://www.desmos.com/calculator e.g. Screenshot You can adjust axes, grids etc. etc. and export a .png via 'Share' at the top right. Cheers |
20th May 2023, 7:54 pm | #4 |
Pentode
Join Date: Jan 2015
Location: Greenock, Inverclyde, UK.
Posts: 161
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Re: Tool to draw Ring Modulator Waveforms?
I'd probably use a spreadsheet for this. Just tried it in Excel - works fine.
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20th May 2023, 11:46 pm | #5 | |
Octode
Join Date: Jul 2011
Location: Staffordshire Moorlands, UK.
Posts: 1,464
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Re: Tool to draw Ring Modulator Waveforms?
Quote:
Steve.
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