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ET-3400 · Heathkit ET-3400 Resources

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Modifications, schematics, manuals and other resources for the Heathkit ET-3400 Microcomputer Learning System.

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Re: any known good 8-bit DAC for ET-3400 waveform output?
Art, thank you for the suggestion about the DAC0800/DAC0808 parts available at Jameco. After posting the question, I checked Jameco. Those two parts would
Posted - Tue Oct 20, 2009 9:46 pm
rm.riches@...
rmrichesjr
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Re: any known good 8-bit DAC for ET-3400 waveform output?
Sorry, my mistake: I posted the info page for the DAC0800 (will still work) - the DAC0808 is also an R-2R ladder network, but has some improvements. It is
Posted - Tue Oct 20, 2009 5:57 am
granz_consult
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Re: any known good 8-bit DAC for ET-3400 waveform output?
The problem with an R-2R resistor ladder network for D-A conversion is that, in 8 bits, the least significant bit is 1/256th of your full-range scale. In other
Posted - Tue Oct 20, 2009 5:50 am
granz_consult
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Re: any known good 8-bit DAC for ET-3400 waveform output?
MC1408 or build your own using resistors: http://www.ikalogic.com/dac08.php ... From: rm.riches@... <rm.riches@...> Subject: [ET-3400] any
Posted - Mon Oct 19, 2009 8:47 pm
whipaway
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any known good 8-bit DAC for ET-3400 waveform output?
Does anyone in the group happen to know of a good 8-bit DAC that works well with the ET-3400 for waveform or limited audio output? Thanks, Robert
Posted - Mon Oct 19, 2009 7:44 pm
rm.riches@...
rmrichesjr
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