great_life2
05-17-2007, 01:44 AM
Here is hours of research and time spend on power supply conversion. I tried for days to convert a laptop adapter and an old PC power supply to power my charger at home. First laptop adapter is not a switching power supply and leaks AC voltage into DC. I tested this on a meter and it showed an unstable 2 to 5 volt AC voltage mixed with DC. This damages the charger which automatically shutsdown and displays error code. You can not bypass this error message by instantly pressing any button. So story continues and I started converting a PC power supply. The first problem was that a PC tower case power supply requires a signal from the motherboard before it can operate, so you have to turn on the whole PC to make the power supply run. I tried a power supply which did not require the tower case auxillary on/off button. THen the problem was peaking when it first powered up. I had to plug in the charger after turning the power supply on and even that sometimes shut down the power supply. Most switching power supply goes into auto recovery which revented me from burning one up. To make the long story short no power supply conversion is worth it. Go to Ebay and you can buy one for $39 including shipping and it is the same one that Astro Flight 109 uses. It is specifically designed to power a RC charger. I wasted hours and more than $20 dollars but you don't have to, now that you know.