[sdiy] My new Supply Voltage Monitor module with inner supply wirings pictures...

cheater cheater cheater00 at gmail.com
Sun Feb 24 02:12:10 CET 2013

Hi Jean-Pierre,
Great idea!

What do you think of the following ideas?
1. make sure it accounts for ripple. For example, if too much AC
ripple is detected, make the led start blinking on-off. And if there's
both AC ripple and DC undervoltage then have it blink between 100% and
50% brightness. Or just have a second set of LEDs for the ripple.
2. ideally, the LEDs would only draw attention when there's a problem
- so maybe only have them light up when there's an issue?
3. give the LEDs a hold, so that when there's a very short fault, they
still signalize it for several seconds. Maybe have a mode where you
need to press a button. This way you can run your modular for several
hours, and see if anything happened during that time, without having
to stare at the LEDs incessantly.


On Sat, Feb 23, 2013 at 11:08 PM, Jean-Pierre Desrochers
<jpdesroc at oricom.ca> wrote:
> Hi list,
> I'm proud to introduce my last synth module..
> It's a Dual Supply Voltage Monitor (M200).
> My two synth power supplies bring +15vdc, -15vdc and +5vdc
> all over my dotcom synth cabinets and I had no way
> to monitor the actual voltages they were spreading
> and didn't know if any supply lines were droping down
> because of a deficient module(s) or wiring problem
> inside my 3 cabinets.. So this module:
> http://www.arcenson.com/projects/Modular/M200-201-202-203_Power_Supply_Modules/M200_Voltage_Monitor/
> monitors BOTH power supplies lines connected in my
> system and lights 3 leds (+15v -15v +5v ) constantly
> for each supplies. Whenever one supply line drops 0.10vdc or more
> below its 'normal' voltage line (ex: 14.90v for a +15vdc line) the
> associated led shuts OFF
> to report a DC line voltage needing to be re-adjusted
> OR there is a problem inside the cabinets that 'ask' for too much current...
> Whenever the low DC voltage line goes back up to 0.05vdc
> below the normal voltage (ex: 14.95v for a +15vdc line) the LED lights back.
> It's very efficient so far..
> You can also have a look at my cabinet's very detailed
> power supplies and BUS line wirings here:
> http://www.arcenson.com/projects/Modular/M200-201-202-203_Power_Supply_Modules/Cabinets_Power_Supplies_Setup/
> Cheers !
> J-Pierre
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