CONTROL CIRCUIT FOR ENGINE RPM OF CONSTRUCTION EQUIPMENT

摘要

The present invention relates to an engine RPM control circuit of a construction machine and, more specifically, to an engine RPM control circuit of a construction machine which can reduce manufacturing costs for the engine RPM control circuit by having modules that use power supplies different from each other and can prevent drop of circuit efficiency caused by noise generated from two converters. Therefore, a circuit for supplying all power required for an engine RPM control circuit with one converter is formed at low manufacturing costs in order to prepare a high efficiency engine RPM control circuit.