I need help setting up my H bridge for a motor design Answered
Please help me !
I am working on an electric motor design, and I am having trouble understanding the sizing of the resistors required to set up my H bridge. If you look at my diagram you will see each phase consists of four power coils wired in parallel . There are two sets of reed proximity sensors that turn the circuit on one way then the other.
I am using a TIP 35c & a TIP 36c for my Transistors
I am using a 1n4936 for my Diodes
I am using a PRX 8200 for my Reed Sensors
You will find data sheets attached
So far I have only been running my project at 12 volts DC . At 12v the transistors are running cold with no resistors at all. I have tried to apply OHM’s Law but I’m not getting it right. I am confused about a few other things as well.
The Data sheet for the Transistors tells me the Base- Emitter Voltage is 5v & the Base current is 5a .
Should I be running a separate power supply for the sensor feed to the base ? Or dose the resistor adjust the voltage for this?
When you buy Resistors they come in 1/4 watt ½ watt 1 watt 2 watt etc. How do you choose the wattage?
I would like to run my motor in 24, 36, 48, or higher voltage, to as much as the transistors will take , but until I understand this set up I fear I will only fry my transistors or sensors if I get it wrong.
Can you help me turn up the power?