Fugger - regarding stabilisation of voltages.

Couple of things - adding caps and boosting coils will only get you so far. The real trick would be to replace the mosfets.

Secondly - a mosfet is a vreg. You can get adjustable ones. Depending on how much ampage you need there are various models available. If you can find the code off one of the power mosfets and look up the spec sheets then you can get an ampage rating. Find another mosfet with the same characteristics but higher ampage rating and adjustable. Dial in a few more volts. Its a very simple circuit to provide adjustment on a simple linear vreg. They have 3 pins for the most part - vIN, vOUT (also the back is vout, hence the cut off pin on the centre of the mosfets) and vADJ. R1 goes from vOUT to vADJ. R2 is from vADJ to ground.


Another method for adding some more regulation is to simply cut the mosfet legs and wire in an add in circuit with more voltage filtering. Find the vINP for every mosfet. De-solder the pin from the boarde and bend it upwards. Solder a wire from the board to a small piece of stripboard on. Solder the positive side of a 1000uF 16v cap to this wire. From the same point on the cap your wire is attached solder another wire going to the mosfet. On the negative side of the cap add a wire to ground. You can also experiment with adding simple voltage booster circuits. Use a zener diode to open up the circuit. For your 12v line use a zener with a trip point of say 12v and have a simple +0.5v input on the output side of the zener - bingo, 0.5v boost. Put thsi on the input side of the cap and itll smooth it right out - you should end up with a much more steady voltage.

Just throwing ideas around - contact me via pm or ICQ if you want to discuss further m8 .

PiLsY.