Terminology and general knowledge about radio control helicopters

Before you get started, you must learn about radio control helicopters. Small workshop equipment and some skill in handling these tools will allow you to move onto the next level. You can always modify the system. Experts strongly advises against making these changes to anyone who does not have the knowledge, skills and equipment needed, since within the source we find dangerous voltages from 220V to 310V AC and continuously, which can cause serious injury or even death if not taken adequate precautions.

Any manipulation of the plate should be done with the power off and unplugged from the mains. Top rc specialists describes the procedure for modifying this information only and disclaims any liability for damage or malfunction arising from same. No need to buy a new high-power source for this project, any 200W fountain will provide us with more than 8 amps on the 12V output, more than enough in most cases. In fact an archaic source that fed the AT to a computer over 10 years would be ideal for our purpose, since the plate is much more simple and uncluttered, with fewer components as it provides fewer lines.

As we said before we have to find or clone the KA7500. In this case we find a TL 494. Once located, simply turn the source if the main switch or joining AT also the green wire to one of Black's ATX- and we will connect the negative lead of the multi meter to a black wire and measure the voltage present on pin 1 of the controller. In this case, as usual, I found 2.5 V (2.46 V actually due to component tolerances). We must proceed with extreme care.

Also, if you inadvertently short-circuited with the tip of the polymer pins 1 and 2, we would refer to the controller free, and this will cause fluctuations in the output voltages that can damage the capacitors. The voltage drops 5V consumption may increase, thus, the controller raises the duty-cycle signal switching this voltage rise and even with the reference, and if the voltage rises by a decrease in consumption, the driver lowers the duty-cycle for the voltage drop and then matched with the reference. Herein is the radio control helicopters regulation switched, and our mission is to get the feedback signal present on pin 1 of the appropriate driver 12V output instead of 5V.

The radio control helicopters idea is simple. Using a resistive divider will allow us to obtain a feedback signal to the comparator, and the divisor must be such that when the voltage supplied by the 12V line is that we want, the voltage divider output is reference equal to the present on pin 2.