iddqd2001 发表于 2016-3-19 14:54:58

DIY Selfcal AC Voltage Standard

本帖最后由 iddqd2001 于 2016-3-19 14:56 编辑

1 uV - 10 V RMS voltage output.
100 Hz - 1 MHz frequency range.

































suny-hyb 发表于 2016-3-19 15:23:36

Welcome foreign electronics enthusiasts{:142_382:}

彭星 发表于 2016-3-19 15:49:26

感谢分享！

官修2 发表于 2016-3-19 16:05:14

看不懂英语，不错谢谢分享

qw66 发表于 2016-3-19 16:08:34

thank you{:142_381:}

scoopydoo 发表于 2016-3-19 16:49:48

Good job, man! {:139_286:}

张文松 发表于 2016-3-19 16:56:53

俄罗斯的朋友又来放毒了{:142_381:}。。。我竟然看到了胜利的9808了

fghlw 发表于 2016-3-19 17:32:00

wonderful

lilith 发表于 2016-3-19 17:54:48

1、how to adjust the output sine amplitude?
2、how to transmit(convert) the sine voltage to dc voltage?

hgjdwx 发表于 2016-3-19 18:04:06

我也说句英语：qiang ren

lxox 发表于 2016-3-19 18:44:41

英语应该不管用，这位是俄罗斯的朋友！

longshort 发表于 2016-3-19 19:03:00

100Hz对应最低位，1MHz对应最大输出？输出滤波器一定是个机密性很强的部分。{:142_381:}

leglg 发表于 2016-3-19 19:51:19

 работает  хорошо,  спасибо  ! 

树叶的门 发表于 2016-3-19 20:06:08

NTC compared with PN juntion, which one will be more precise for oven? I'm working on a simple oven using 10K NTC, SCH wasreferenced from a TCXO.

suny-hyb 发表于 2016-3-19 20:09:53

Can you tell us:
How to achieve closed-loop control, how to achieve a stable AC to DC conversion{:142_382:}

suny-hyb 发表于 2016-3-19 20:36:36

---FLUKE5200

lilith 发表于 2016-3-19 21:12:45

本帖最后由 lilith 于 2016-3-19 21:15 编辑

My fixed frequency closeloop sineware source, output AC voltage calibrate to the DC Voltage reference(V1)






hu_lin 发表于 2016-3-19 22:01:29

前面的还没研究完，你又出新成果了

iddqd2001 发表于 2016-3-19 22:21:47

lilith 发表于 2016-3-19 17:54
1、how to adjust the output sine amplitude?
2、how to transmit(convert) the sine voltage to dc volt ...

1. This is the "lite" version without the amplitude adjustment.
2. This is the well-known calculable type of voltage reference.
Digitally Generated AC Reference Source

The Solutions: Calculable AC Voltage Reference

Guildline Model 7410 AC Voltage Reference

lilith 发表于 2016-3-20 18:05:18

iddqd2001 发表于 2016-3-19 22:21
1. This is the "lite" version without the amplitude adjustment.
2. This is the well-known calcula ...


I konw you mean,but its not a AC self-calibration source,because
1、the calibration point is not at amplifier(1V/10V) output, the error introduced by amp(temperature,frequency,and so on ) could not be corrected.
2、the AC Voltage isnot building a close-loop by your DC Standard, its open loop. I think the self-calibration is a close loop design?

iddqd2001 发表于 2016-3-20 21:19:19

{:139_278:} It's a simple prototype board, made over the weekend. The full one is mach more complex.

iddqd2001 发表于 2016-3-20 21:19:35

{:139_278:} It's a simple prototype board, made over the weekend. The full one is mach more complex.

hepingmail 发表于 2016-3-22 20:36:38

一直不知道AC基准的原理，现在终于有机会来好像研究了！

feiguohai517 发表于 2017-8-1 16:54:45

好东西，学习了！

feiguohai517 发表于 2017-8-1 18:56:04

学习了！
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