Haha :lol: I never thought about the wire bodgan. I wish i had :lol:
Actually, someone asked me to build a circuit which produces 30V from a 7.2V supply as a permanent magnet DC motor speed booster (RC car). In his idea, when the boost button is pressed, the circuit is activated and then delivers 30V to the motor. However, the boost will be only for a short period so that the motor will not get burnt. I wonder if this idea works but i think it worth a try.
About the output current, the 20A is just my assumption. As i said, the circuit only provides a short duration of speed boost. This means, the circuit is only supposed to be activated after the vehicle gained the momentum. From what i read so far, the current is very much needed for the starting pick-up (to overcome the weight of the vehicle), and then after it reached the momentum, less current is needed. Am i right? So, i made an assumption that this circuit only delivers high voltage (30V) with lower current, which i picked approximately as 20A. Please correct me if my assumption is wrong. If wrong, please give me a rough estimation of the output current.
About the circuit, if the 74HC14 doesn't support higher than 5V as the supply voltage, i plan to use a 5V regulator and put a large heatsink on it (which i'm not sure if it works or not).
For you experts out there, any ideas are welcomed sooooo much!