# \#acvoltage **URL:** https://community.openenergymonitor.org/tag/acvoltage/274.md [Latest](https://community.openenergymonitor.org/latest.md) · [Categories](https://community.openenergymonitor.org/categories.md) · [Tags](https://community.openenergymonitor.org/tags.md) --- ## [Din rail voltage sensor](https://community.openenergymonitor.org/t/din-rail-voltage-sensor/16099)
**Author:** [@Nico](https://community.openenergymonitor.org/u/Nico)\ **Replies:** 2\ **Last updated:** [4 December 2020 18:10 UTC](https://community.openenergymonitor.org/t/din-rail-voltage-sensor/16099 "2020-12-04T18:10:11Z")
I have the voltage sensor plugged in a socket in my board. Is there any chance to use a din rail one? If yes which one do you suggest? Thank you --- ## [Product recommendation: 3-phase 240V (120V, 120V, 120V, Neutral)](https://community.openenergymonitor.org/t/product-recommendation-3-phase-240v-120v-120v-120v-neutral/13861)
**Author:** [@alejandro](https://community.openenergymonitor.org/u/alejandro)\ **Replies:** 3\ **Last updated:** [16 April 2020 16:30 UTC](https://community.openenergymonitor.org/t/product-recommendation-3-phase-240v-120v-120v-120v-neutral/13861 "2020-04-16T16:30:42Z")
Hey there, I’m from Mexico and I want to install an energy monitor in my house. Here in Mexico we use 3-phases for HVAC system and mono-phase for the rest of the house. The currents we get from the utility company are 12… --- ## [3 phase 3 wire voltage meaurement](https://community.openenergymonitor.org/t/3-phase-3-wire-voltage-meaurement/10350)
**Author:** [@ajitnayak87](https://community.openenergymonitor.org/u/ajitnayak87)\ **Replies:** 2\ **Last updated:** [8 March 2019 14:57 UTC](https://community.openenergymonitor.org/t/3-phase-3-wire-voltage-meaurement/10350 "2019-03-08T14:57:24Z")
Dear all, I am trying to build 3 phase voltmeter that could measure L-L and L-N voltage during 3 phase 3 wire and 3 phase 4 wire connection. 3 phase 3 wire and 3 phase 4 wire connection are external connection. as we k… --- ## [How to wire AC AC adaptor to Arduino](https://community.openenergymonitor.org/t/how-to-wire-ac-ac-adaptor-to-arduino/6259)
**Author:** [@milo204](https://community.openenergymonitor.org/u/milo204)\ **Replies:** 1\ **Last updated:** [15 January 2018 14:49 UTC](https://community.openenergymonitor.org/t/how-to-wire-ac-ac-adaptor-to-arduino/6259 "2018-01-15T14:49:51Z")
Hi, im trying to make the energy monitor, and am very confused with how to wire the AC AC adaptor to the board. does anyone have any photos to show the wiring? im following this tutorial; https://learn.openenergymonito… --- ## [AC-AC adaptor & extension leads](https://community.openenergymonitor.org/t/ac-ac-adaptor-extension-leads/5459)
**Author:** [@mozster](https://community.openenergymonitor.org/u/mozster)\ **Replies:** 2\ **Last updated:** [26 October 2017 00:27 UTC](https://community.openenergymonitor.org/t/ac-ac-adaptor-extension-leads/5459 "2017-10-26T00:27:07Z")
Hi I’m trying to figure out the pre-requisites needed before buying and installing an emonPi to measure household gas & electricity usage. My meters are located outside and the consumer unit is directly behind the elec… --- ## [Common Voltage Sensing and power supply](https://community.openenergymonitor.org/t/common-voltage-sensing-and-power-supply/5030)
**Author:** [@ijg1970](https://community.openenergymonitor.org/u/ijg1970)\ **Replies:** 4\ **Last updated:** [7 September 2017 08:24 UTC](https://community.openenergymonitor.org/t/common-voltage-sensing-and-power-supply/5030 "2017-09-07T08:24:16Z")
Hello everyone, Is it possible to use a step down transformer for both voltage sensing and power for the Arduino? My idea is to have a 240V step down to 9V. The secondary will feed two parallel circuits. The first one … --- ## [Measure AC Voltage 3 phase (phase to phase)](https://community.openenergymonitor.org/t/measure-ac-voltage-3-phase-phase-to-phase/3729)
**Author:** [@stifagrath](https://community.openenergymonitor.org/u/stifagrath)\ **Replies:** 1\ **Last updated:** [14 April 2017 15:44 UTC](https://community.openenergymonitor.org/t/measure-ac-voltage-3-phase-phase-to-phase/3729 "2017-04-14T15:44:53Z")
Hallo guys, i’m newbie in here. i’m so sorry if my language is broken. i’ll try to explain about my problem. i want to monitoring ac voltage 3 phase (phase to phase) use arduino mega 2560. but i don’t know how to insta… --- ## [Strange LTSpice Simulation result on emonTx v3 AC Voltage Sensor Circuitry](https://community.openenergymonitor.org/t/strange-ltspice-simulation-result-on-emontx-v3-ac-voltage-sensor-circuitry/3087)
**Author:** [@miq](https://community.openenergymonitor.org/u/miq)\ **Replies:** 9\ **Last updated:** [12 February 2017 12:06 UTC](https://community.openenergymonitor.org/t/strange-ltspice-simulation-result-on-emontx-v3-ac-voltage-sensor-circuitry/3087 "2017-02-12T12:06:22Z")
Hi, I want to replace the controller board of an old 3000 watt dc-motor-controlled voltage stabilizer. I am planning to sense the voltage from the built-in secondary winding of the voltage stabilizer, and based on the s…