The novel customized Downhole motor drive circuit belongs to the field of drive control of downhole logging instruments for oil, gas and water wells and various intelligent downhole tool motors. The circuit of the invention is an H-type circuit, including a logic control circuit and a double-bridge conduction circuit. The logic control circuit includes a forward rotation control circuit and a reverse rotation control circuit, the double-bridge conduction circuit includes an A bridge drive output circuit and a B bridge drive output circuit, and the motor is driven by the A bridge circuit or by the B bridge circuit. The drive output circuit is driven; by applying different negative working voltages, the motor is turned forward, reversed or stopped, thereby controlling the opening and closing of the current collecting umbrella. The circuit of the present invention does not need contact switching, and can perform multi-parameter logging. Wide power supply voltage range, simple operation and reliable operation, can provide higher working voltage and larger driving current for the motor in high temperature environment, suitable for oil, gas, water well downhole logging instruments and various intelligent downhole tool motors drive control.

In summary, this is a brief introduction to the relevant knowledge of the new customized Downhole motor drive circuit.