Skydiver
New Member
I'm building a scuba sled and I need to create a PWM to control the DC motor. I could use resistive speed control but I don't want heat or the inefficiency of this design. I've found a few resources on 555 ICs and found a neat Win OS app to test different resistors and caps to change the frequency (glad to get the URL if anyone's interested).
My question involves the two TIP35A transistors that I have. I need to handle approx 40amps of current (12V, 35Ahr battery). Seeing I'm at or above the limit of the transistors individually how do I set these in series and how are they to be triggered? Do they only require a 5V trigger to close the circuit? I could always get a higher current transistor but what fun would that be?
If possibly please explain to me what needs to be done in simple terms. No big words or scary electrical jargon evil . Thanks for any input!
Rich
My question involves the two TIP35A transistors that I have. I need to handle approx 40amps of current (12V, 35Ahr battery). Seeing I'm at or above the limit of the transistors individually how do I set these in series and how are they to be triggered? Do they only require a 5V trigger to close the circuit? I could always get a higher current transistor but what fun would that be?
If possibly please explain to me what needs to be done in simple terms. No big words or scary electrical jargon evil . Thanks for any input!
Rich