Comment summary #12
The comments are shown without formatting, links and images.
Comment 111 ... 120
| date | article | author | comment |
| 23 mei 2018 22:01:25 | Fast Lux meter | Freddy | The MAX4239 has a lower input offset voltage, so the negative output voltage sould become less by using this opamp. If the bandwidth is less important you could make the feedback capacitor larger. This will reduce the noise level. |
| 23 mei 2018 14:25:01 | Fast Lux meter | Marcos Fraga | Hi Freddy! Thanks for the circuit :) What would you recomend to do to make this circuit sensitive from 0 - 50 lux? With the setup in fig 6. the noise is low but it still makes a problem at lover voltages. I get negative average voltage when going under 5 lux because ov pk to pk noise. Maybe I could offset the whole thing? All comments are appreciated. BR Marcos |
| 11 mei 2018 10:40:02 | Circuit editor help/info | Freddy | Hey Paul, thanks for your compliments and remarks. Something went wrong with the P-channel MOSFET. The corrected symbol library is available now. Are there any general symbols that you would like to see and are missing now? No, it is not possible to edit wires, you have to redraw them. |
| 09 mei 2018 06:42:13 | Circuit editor help/info | Paul Alting van Geusau | Hello Freddy, I am using your web based circuit editor and I like it very much, thank you for a nice easy to use application. I also like the methods for exporting the circuit to various image formats, very handy. Something I noticed is that with a P channel MOSFET, the internal bypass diode is the wrong way round I believe. Is there a way to edit an existing line, for example, to shorten or make longer a selected line ? Veel dank van "down under" - Tasmanië Paul (VK7KPA) |
| 06 apr 2018 12:26:56 | Arduino wattmeter | Cristianocts | Or an blue pill (STM32F103C8T6).\\ It as 2 ADC channels @1Msps, 64 K flash and 20 K SRAM |
| 05 apr 2018 11:36:48 | Arduino wattmeter | Bigal | Maybe you could try to get the code running on a Teensy |
| 05 apr 2018 10:47:33 | Arduino wattmeter | Freddy | It is not possible to combine multiple measurements on one Arduino. The resources (especial the RAM space) are almost exhausted. |
| 04 apr 2018 22:37:50 | Arduino wattmeter | Wolfram Fischer | Hi Freddy, after long time using the powermeter i have a special wish, maybe you can give some hints: For my PV System i need a powermeter with 4 Inputs, PV1,PV2,PV3 and a Windmill. Is it possible to make this with one arduino-nano and 4x LTC1050? And how & what do i have to change in the software? Would you be so kind to help me? Wolfram. |
| 03 maa 2018 20:11:53 | Accuracy, precision & resolution | Siddig M. Hamza | I appreciate the efforts done in this site, I would like to join and stay in touch, though I cannot see "sign up link". Thanks alot. |
| 31 jan 2018 15:13:45 | Additive synthese waveform generator | David Clarke | This is very neat. It would be even nicer if you could add an arbitrary phase shift to the harmonics. I know that the sound is not supposed to be affected by the phase, but this tool is also pretty handy for visualising the effect of harmonics on digital data, for which the actual wave shape is critical. |