Jump to content

Dabada

Members
  • Posts

    2
  • Joined

  • Last visited

    Never

Personal Information

  • Full Name
    Mounir Jarraï
  • Location
    Tunisia
  • What DNA product do you own or plan to buy?
    DNA 250

Dabada's Achievements

New Member

New Member (1/3)

0

Reputation

  1. I think the things are simpler than that. If you apply voltage and current to a resistor the latter will heat up. This heat depends on the power dissipated by the resistance in Watts and the time in seconds during which you hold the trigger fire. For a resistance of 1 Ohm and traversed by a current of 5 A the power dissipated will be 25 W (P = R * i ^ 2). If I hold the trigger for 2 sec, the dissipated energy will be 50 Joule (E = W * t). It is the energy applied to the wick (without taking into account the losses). Now, if I apply a current of 5 A on two resistors of a value of 2 Ohm each, I will have the same power on the whole circuit that is to say 25 W (2 Ohm in parallel = 1 Ohm) . The question is: what is the power dissipated by one resistance and therefore applied on a wick? In a circuit in parallel and with two equal resistances the current will be divided by two. We thus have 2.5 A by resistance and therefore a power P = 2 * 2.5 ^ 2 = 12.5 W. In conclusion the dissipated power is divided in two as well. Each resistance therefore delivers only half of the total power. For a trigger held for 2 sec, the energy applied on each wick is 25 Joule! The Half ! It is for this reason that for a double coil installation it is necessary to double the power or the temperature to maintain the same energy applied per wick. It will be interesting, if Evolv, adds an option in the Escribe software that allows the user to specify the number of parallel coil used. Sorry for my english ! Google Translate.
  2. Hi, I’ve got the same problem on my DNA. So, I plugged my DNA on a laboratory power supply with a fixed voltage and current. (voltage = 5v, current = 2A). Guess what? Same problem, my DNA only consume 0.31 A (Confirmed by the PSU)! So I've tested with all my usb cable. The result: my Triade 250 consumes 1.98 A (confirmed by PSU), only with the little tiny usb cable suppled with it ! So, my advise is to use the little cable with a tablet charger (often supply a current of 2.1 A). I hop this helps you. Sorry for my english (it’s note my native language).
×
×
  • Create New...