# Using a variable tension generator? **URL:** \ **Category:** DIY STUFF\ **Created:** [October 27, 2021, 1:16pm UTC](https://lookmumnocomputer.discourse.group/t/using-a-variable-tension-generator/4148 "2021-10-27T13:16:07Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [October 27, 2021, 3:11pm UTC](https://lookmumnocomputer.discourse.group/t/using-a-variable-tension-generator/4148/2 "2021-10-27T15:11:44Z")
You’d need two of them. Connect +V from one supply to ground, -V from the other to ground, and connect the two grounds together and to ground on your module. The remaining - terminal is -12 V, the remaining + terminal is +12 V. Or at least that’s how it usually works with these power supplies — if the + and - outputs float and the ground connects to mains ground. Check before proceeding. See also: > [@2 Single Output Bench Power Supplies vs One Dual Output Supply](https://lookmumnocomputer.discourse.group/t/2-single-output-bench-power-supplies-vs-one-dual-output-supply/2622): > > Just getting into DIY module building and am trying to save a few bucks. I’m located in the US and would like to get a bench supply for my shop for testing my modules and gizmos. I realize there are some cheap alternatives for using a case supply for KOSMO/Eurorack for testing, but would like a generalized bench supply for other electronic work outside of synth building too. When my builds are case ready, I’ll setup a case supply for them then. Since I have to supply both +12v and -12v is it be… --- _[View the full topic](https://lookmumnocomputer.discourse.group/t/using-a-variable-tension-generator/4148)._