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a non inverting configuration with positive feedback U301A
1. It is driving a HV Voltage source with a resitor dividor feeding back to the controller. We am trying to make the high voltage source as stable as possible with this controller. 2. The gate signal is connected to a BJT arrangement that pulls the gate to ground (I assue that disables the circuit).3. That is what I am trying to find out, I am not sure what to make of this circuit. From a simulation that I did there is not much change adding or removing this last segment of the control loop, rather it seems like it is used to turn on and off the output throught Q300? This is just speculation but I hope someone can help me figure it out.
Hello,I am a new member of this site and a beginner in the subject. I don't know how to navigate it yet but I came across your post while doing a search and I'm telling you my problem thinking that you might be able to help me find the solution or tell me where to ask my question more effectivelyI purchased a controller as specified belowan PWM type single channel H-Bridge DC brushed motor driver for automotive useThe pin assignment is as follow:an Output high-side current monitoring function (OCM pin):+VIN; GND and M+;M-A Microcontroller(inputs):PWM1: Driver control signal input pin 1PWM2: Driver control signal input pin 2ENGBD+12V OUTI plan to use it to vary the speed of a 12 volt electric motor (a motorcycle starter) connected to a 12 volt motorcycle battery as well.The problem is that when I connect the throttle to the controller inputs (+12v pin; Gnd pin and signal pin) the output signal of the throttle connected to the PWM1 input of the controller, I obtain an inverted effect, i.e. the motor spins when the throttle is closed and at rest and the motor stops when the throttle is opened with the lever pushed all the way. If I connect the throttle signal pin to the PWM2 of the controller nothing happensMy question is how to reverse things, i.e. make the motor spin as the throttle is applied towards more gas and not the other way around.Thanks