| Measuring capacitance very precisely. | | 01/01/70 00:00 |
| "I want the best money can buy, but I do | | 01/01/70 00:00 |
| In this specific case I disagree. | | 01/01/70 00:00 |
| Bridge? | | 01/01/70 00:00 |
| Bridge! | | 01/01/70 00:00 |
| AC bridge | | 01/01/70 00:00 |
| Error Sources | | 01/01/70 00:00 |
| Blumlein Bridge | | 01/01/70 00:00 |
| Blumlein Bridre. | | 01/01/70 00:00 |
| Bridge excitation | | 01/01/70 00:00 |
| Blumlein | | 01/01/70 00:00 |
| Let the statistics be your friend... | | 01/01/70 00:00 |
| frequency meter | | 01/01/70 00:00 |
| Product as a Transfer Standard | | 01/01/70 00:00 |
| Distributor of your confidence | | 01/01/70 00:00 |
| Suppliers like that ... | | 01/01/70 00:00 |
| why blame the suppliers | | 01/01/70 00:00 |
| Not at all | | 01/01/70 00:00 |
| Hah! | | 01/01/70 00:00 |
| Statistics for reference determination. | | 01/01/70 00:00 |
| You got it! | | 01/01/70 00:00 |
| questions | | 01/01/70 00:00 |
| he wants to select to 0.1% from 1% stock | | 01/01/70 00:00 |
| that is a bad idea | | 01/01/70 00:00 |
| Hmm | | 01/01/70 00:00 |
| That's a good way | | 01/01/70 00:00 |
| posts cross timed | | 01/01/70 00:00 |
| It makes sense to select them | | 01/01/70 00:00 |
| No sorting of Caps. | | 01/01/70 00:00 |
| then, are you not using the wrong approa | | 01/01/70 00:00 |
| Time constant | | 01/01/70 00:00 |
| Re: Eliminate cap sorting | | 01/01/70 00:00 |
| Example | | 01/01/70 00:00 |
| you do not need precision, you need rate | | 01/01/70 00:00 |
| Would it not be easier the other way? | | 01/01/70 00:00 |
| Difficult | | 01/01/70 00:00 |
| Yes Digital Difficult. | | 01/01/70 00:00 |
| I think the point has been missed again. | | 01/01/70 00:00 |
| Demo ? | | 01/01/70 00:00 |
| Difficult to change now. | | 01/01/70 00:00 |
| Don't worry | | 01/01/70 00:00 |
| Re: Dont Worry. | | 01/01/70 00:00 |
| How to calibrate an integrator? | | 01/01/70 00:00 |
| Re: How to calib. an integratrator. | | 01/01/70 00:00 |
| Answers | | 01/01/70 00:00 |
| 256Hz too fast. | | 01/01/70 00:00 |
| Integrator and RMS using DSP | | 01/01/70 00:00 |
| Whats available easily. | | 01/01/70 00:00 |
| dsPIC30F2010 | | 01/01/70 00:00 |
| 500 kSPS | | 01/01/70 00:00 |
| This little PICcy got eaten, the SILabs | | 01/01/70 00:00 |
| Is that useful? | | 01/01/70 00:00 |
| Planning to use dspic. | | 01/01/70 00:00 |
| Speed ? | | 01/01/70 00:00 |
| But for what purpose? | | 01/01/70 00:00 |
| MAC | | 01/01/70 00:00 |
| it is amazing | | 01/01/70 00:00 |
| Here is the analysis | | 01/01/70 00:00 |
| the content, not the words | | 01/01/70 00:00 |
| analysis please | | 01/01/70 00:00 |
| since you, just like me, have no idea ab | | 01/01/70 00:00 |
| Ah! The Horatio quote version 2! | | 01/01/70 00:00 |
| again, you focus on words, not content | | 01/01/70 00:00 |
| Which is why I asked... | | 01/01/70 00:00 |
| If what you are saying is that I can not | | 01/01/70 00:00 |
| I had to. | | 01/01/70 00:00 |
| You said it! | | 01/01/70 00:00 |
| Analog integrator | | 01/01/70 00:00 |
| How do you calculate the RMS? | | 01/01/70 00:00 |
| RMS in detail. | | 01/01/70 00:00 |
| Out of interest. | | 01/01/70 00:00 |
| wot you want a RMS demo,steve?? | | 01/01/70 00:00 |
| FIXED point | | 01/01/70 00:00 |
| fixed point is almost as bad | | 01/01/70 00:00 |
| Alternative | | 01/01/70 00:00 |
| NCO again | | 01/01/70 00:00 |
| Would be nice | | 01/01/70 00:00 |
| Timer2 of 89C52 | | 01/01/70 00:00 |
| clever | | 01/01/70 00:00 |
| Oops! Incomplete statement | | 01/01/70 00:00 |
| Clock feedthrough | | 01/01/70 00:00 |
| Maxim App note | | 01/01/70 00:00 |
| Nice links, thanks! | | 01/01/70 00:00 |
| AD9832 | | 01/01/70 00:00 |
| sine vawe | | 01/01/70 00:00 |
| Re: Alternative. | | 01/01/70 00:00 |
| Will work | | 01/01/70 00:00 |
| Re: 64Hz Gain 1.126. | | 01/01/70 00:00 |
| Maximum input voltage range | | 01/01/70 00:00 |
| Re: Max. Input voltage Range. | | 01/01/70 00:00 |
| You have got it | | 01/01/70 00:00 |
| indeed, and | | 01/01/70 00:00 |
| Is the resistor in gnd really needed. | | 01/01/70 00:00 |
| Negligible with CMOS Opamps | | 01/01/70 00:00 |
| Re: Negligible with CMOS Opamps. | | 01/01/70 00:00 |
| Most opamp datasheet do specify | | 01/01/70 00:00 |
| Input Bias Current | | 01/01/70 00:00 |
| Impedance matching | | 01/01/70 00:00 |
| Re: Impedence Matching. | | 01/01/70 00:00 |
| yess balancing is required and to that.. | | 01/01/70 00:00 |
| 4u7 Cap polarity and type. | | 01/01/70 00:00 |
| Foil caps are needed | | 01/01/70 00:00 |
| Available Capacitors. | | 01/01/70 00:00 |
| This one | | 01/01/70 00:00 |
| What are these MK equivalents | | 01/01/70 00:00 |
| MKT, MKP, MKC, KT, KP, KC,... | | 01/01/70 00:00 |
| Thanks Kai, | | 01/01/70 00:00 |
| Ground Planes. | | 01/01/70 00:00 |
| Have you had problems? | | 01/01/70 00:00 |
| RE: Have you had problems. | | 01/01/70 00:00 |
| Keep the oscillator away from output | | 01/01/70 00:00 |
| Board Layouts. | | 01/01/70 00:00 |
| Recommendations | | 01/01/70 00:00 |
| Corrected Board | | 01/01/70 00:00 |
| I try to draw it for you | | 01/01/70 00:00 |
| RE: I try to draw it. | | 01/01/70 00:00 |
| Here it is | | 01/01/70 00:00 |
| RE: Corrected Ver 2.0 | | 01/01/70 00:00 |
| Answers | | 01/01/70 00:00 |
| Re: Corrected Ver. 3.0 | | 01/01/70 00:00 |
| Some hints | | 01/01/70 00:00 |
| Re: I am in trouble. | | 01/01/70 00:00 |
| Sorry! | | 01/01/70 00:00 |
| Is this schematic correct. | | 01/01/70 00:00 |
| Corrections | | 01/01/70 00:00 |
| Re: Correction. | | 01/01/70 00:00 |
| Mylars will do | | 01/01/70 00:00 |
| Corrected Board and schematics Ver 4.0 | | 01/01/70 00:00 |
| Why not doing it like this? | | 01/01/70 00:00 |
| Re: Corrected boards ver 5.0 | | 01/01/70 00:00 |
| Some hints | | 01/01/70 00:00 |
| Corrected board ver: 6.0 | | 01/01/70 00:00 |
| Please remove it... | | 01/01/70 00:00 |
| Yes removed Gnd plane from mount hole. | | 01/01/70 00:00 |
| Looks good now | | 01/01/70 00:00 |
| Does than mean Green signal. | | 01/01/70 00:00 |
| Yes | | 01/01/70 00:00 |
| Thanks Kai. | | 01/01/70 00:00 |
| trying to understand that | | 01/01/70 00:00 |
| DC impedance of ground plane | | 01/01/70 00:00 |
| bipolar swings how and where? | | 01/01/70 00:00 |
| Here | | 01/01/70 00:00 |
| explain a bit please | | 01/01/70 00:00 |
| Explaination | | 01/01/70 00:00 |
| Me ? | | 01/01/70 00:00 |
| Exactly!! | | 01/01/70 00:00 |
| as requested a demo.....,sort of | | 01/01/70 00:00 |
| simulation results of the demo...sort of | | 01/01/70 00:00 |
| Thanks Jez. | | 01/01/70 00:00 |
| Changing Q7 to Q9. | | 01/01/70 00:00 |
| AD7142/AD7745 | | 01/01/70 00:00 |
| Only good for a few pF | | 01/01/70 00:00 |
| My apologies | | 01/01/70 00:00 |
| No need to apologize! | | 01/01/70 00:00 |
| Nice part | | 01/01/70 00:00 |
| Built Precision Sine Wave Generator. | | 01/01/70 00:00 |
Good luck | | 01/01/70 00:00 |
