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| A niche chip (LT4320) for mains powered AC -> low volt DC "linear" based psu ? |
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| resistor:
Could this chip be used for AM demodulation as an envelope detector? Or would the feedback mechanism interfere with the intentional amplitude variations? |
| digsys:
--- Quote from: resistor ---Could this chip be used for AM demodulation as an envelope detector? Or would the feedback mechanism interfere with the intentional amplitude variations? --- End quote --- I have very little experience in this area - but note possible limitations : 600Hz max AC (ver2), 6VAC min, 100-220uF sec min. |
| BravoV:
Fyi, this chip max out at only 600 Hz, not even 1 KHz, AM modulation is way-way higher isn't it ? |
| resistor:
OK, true, the frequency limitation would kill this for actual AM radio. But could it be used as an envelope detector for a frequency that was inside its range? |
| peter.mitchell:
--- Quote from: digsys on January 01, 2014, 10:26:34 pm --- --- Quote from: resistor ---Could this chip be used for AM demodulation as an envelope detector? Or would the feedback mechanism interfere with the intentional amplitude variations? --- End quote --- I have very little experience in this area - but note possible limitations : 600Hz max AC (ver2), 6VAC min, 100-220uF sec min. --- End quote --- Just a quick question, have you tried it at over 600hz? Maybe a siggen? or if you need some oomph behind the siggen, feed it through an audio amp first. |
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