Hi to all,
I'm designing a motor driver circuit. The H-bridge is already ok. I want now to stop the motor if its current reach 100mA. So, Im thinking about a circuit that sense the 100mA and send a signal to the 5V microcontroller. Im searching for a simple circuit, with 1 transistor that amplifies the shunt voltage of a resistor. I dont need a lot of precision. I dont want to use opamp.
Any idea ?
I'm designing a motor driver circuit. The H-bridge is already ok. I want now to stop the motor if its current reach 100mA. So, Im thinking about a circuit that sense the 100mA and send a signal to the 5V microcontroller. Im searching for a simple circuit, with 1 transistor that amplifies the shunt voltage of a resistor. I dont need a lot of precision. I dont want to use opamp.
Any idea ?