This small board was designed to bring some extra flexibility and customization regarding powering up a modular system.
This small board allows to time the deployment of power to a specific module, it can delay each power line independently by 3 seconds, meaning that after powering up your modular it will wait for 3 seconds until it will provide power to the specific module connected to it. This delay time can also be customized by the user replacing a couple capacitors.
There are also creative and useful uses, for example plug it to those specific modules that "drive" your patch, like a sequencer or a clock and have them power up later so that other modules have time to start up and stabilize before starting up the clock. Go even deeper in this idea and have diferent 900PDs with diferent capacitors that will allow you to "program" a sequential module power up, useful for generative patches that run on a power timer in exhibitions and galleries.
This pcb will be plugged onto your busboard and, in turn, allow a ribbon power cable to be connected to it.
There are 2 models ADDAC901PDO for Old style Busboards and ADDAC901PDN for New style Busboards