Description:
Electronic circuit design.
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mc33063 current limiting
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How does the current limiting work in the MC33063. The datasheet doesn't explain the actual mechanism. [link] Does it discharge the timing cap when it detects overcurrent, which would restart the oscillator, or does it let the oscillator keep running but at a... more »
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Delta Sigma ADC and clock noise
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Hello all, Could you suggest a reading about the effects of clock jitter in delta-sigma ADCs ? How does it affect SNR, THD, IMD, SFDR ? For some reason, this practical aspect is not mentioned in the ADC datasheets and manuals; the typical phrase is "good quality low jitter clock should be provided", whatever it means.... more »
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Can you believe:
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Can you believe: White House thinks "panty bomber" was only an attempt by US Intelligence Community to embarrass Obama.... [link] ...Jim Thompson... more »
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Multiple current mirrors
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Gentlemen, I'm working on the concept for an instrument that needs to take a number of current sources (photodiodes, 44 off) and find the ratio between each of the 43 currents with the 44th (the largest). The currents are in the range of, say, 100 nA to 10 uA. Electronics design is a bit out of my skill set but I'd like to give... more »
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Photodiode readout without transimpedance amplifier
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Hello all, I'm trying to develop a photodiode readout pre-amp without using a current-to-voltage converter; the post-processing steps that I want to do require a current as a signal. The best performance (SNR and bandwidth) that I have come up with is to feed the photocurrent directly into the base of an emitter follower NPN, but I'm thinking that there are better methods... more »
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toroid winding house
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Hi everybody I am looking tor somebody to advise me on power toroid winding (how many turn may realistically be squeezed in the core). E.g.: core dimensions are ID=16.3mm, height-11.1mm; I need to wind x turns, What is the thickest wire I can use? Small volume coil winding house reference would be appreciated.... more »
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