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Módulo eletrônico de controle para válvulas solenóides

2002; Brazilian Chemical Society; Volume: 25; Issue: 5 Linguagem: Inglês

10.1590/s0100-40422002000500021

1678-7064

José Alberto Fracassi da Silva, Claudimir Lúcio do Lago,

Power Systems and Technologies

ELECTRONIC MODULE FOR SOLENOID VALVE CONTROL.This technical note describes a new and simple electronic circuit for driving solenoid valves.The circuit is based on a single integrated circuit DRV103, which is able to drive resistive or inductive loads up to 1.5 A. Switching of 12-V loads can be controlled by TTL-level signals in two distinct steps.Initially, 12 V is applied during 110 ms, followed by 4.2 V RMS until the end of the activation TTL pulse.This mode of operation is particularly suitable to drive solenoids, because it requires a higher voltage to start and a lower maintenance voltage.By using this circuit, power consumption and heating are reduced and the solenoid lifetime is enhanced.Moreover, this circuit is specially appropriated to build computer-controlled solenoid valves systems.