Mensaje originado el: 05/01/10 a las: 21:45 z

12V Fluorescent Tube Inverter




From: G8MNY@GB7CIP.#32.GBR.EU
To  : TECH@WW

Very Easy Fluorescent Tube Inverter Circuit 12 DC to 220 AC 6 - 20 W

                                + 12 V
           +----+-----------------------------------+ !! |----------++
           |    |                                   | !! /          ||
    555   -+----+-        1M                        / !! \         ----
          |8    4|          /                  12v  \ !! /  220v   |  |
       +--|------|-------- >\                  1A   / !! \         |  |
       +--+6     |          /                     c | !! /         |  |
       |  |      |          |                 b   |/  !! \         ----
 0.1-  +--+2    3+----------+    +-/100 R/--------|   !! /          ||
 0.001 |  |      |          /    |        TIP 41  |\     |----------++
      --- |      |          \<----                e >
      --- |5    1|          /                       |
       |  -+----+-          \ 4k7                   |
       |.01=    |           |                       |
       +---+----+-----------+-----------------------+

Tune 1 M for +- 10 KHz, and maximum efficiency / resonance from transformer.
Tune 4k7 for desired current / brightness.
Heatsink TIP 41 for currents > 300 ma.

From Chrissi ZR6CPB

73 De John, G8MNY @ GB7CIP