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| BobA:
One reason to choose 12V over 5V is that there is usually more leeway to reduce the light output by reducing the voltage. Eg: 12V leds will run fine on 9V, 7V and even 5V just at reduced light output. 5V leds cannot be lowered much or the LED threashold voltage cannot be reached. |
| SavannahLion:
--- Quote from: BobA on November 19, 2011, 02:41:22 pm ---One reason to choose 12V over 5V is that there is usually more leeway to reduce the light output by reducing the voltage. Eg: 12V leds will run fine on 9V, 7V and even 5V just at reduced light output. 5V leds cannot be lowered much or the LED threashold voltage cannot be reached. --- End quote --- That's if you're using an analog pot. It would still be a wash if you've got a bunch of LED's on there that your threshold is about as narrow as a 5v circuit. It also wouldn't matter if you're using a control board since they control light intensity via PWM rather than analog output. Of course, if one is using such a board, then the question of whether to use 5v or 12v is already answered for you. |
| D_Harris:
--- Quote from: BobA on November 19, 2011, 02:41:22 pm ---One reason to choose 12V over 5V is that there is usually more leeway to reduce the light output by reducing the voltage. Eg: 12V leds will run fine on 9V, 7V and even 5V just at reduced light output. 5V leds cannot be lowered much or the LED threashold voltage cannot be reached. --- End quote --- Thanks. I hadn't considered that light output may be adjustable. I'll be looking into that as a possibility. But as it is now I'm about to pick up an LED joystick and two LED buttons for Player 1 and player 2. I'll have to inquire about what else would be needed to adjust output, and decide from there if it is worth the trouble. Thanks a lot. Darren Harris Staten Island, New York. |
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