Hydraulic circuit for transmission

A hydraulic circuit for a transmission, the hydraulic circuit comprising:

• a friction element configured to engage or disengage an operating element of the transmission;
• a pump configured to pump oil to form preliminary pressure that allows the friction element to be maintained in a standby state in which the friction element is ready to operate;
• and
• a direct control valve configured to receive the oil that has passed through the pump, the direct control valve adjusting the preliminary pressure to form operating pressure that allows the friction element to operate, when operating the friction element,
• wherein the friction element includes:
• a hydraulic chamber into which the oil is introduced;
• a first supply hole through which the oil that has passed through the pump is supplied to the hydraulic chamber;
• and
• a second supply hole through which the oil that has passed through the direct control valve is supplied to the hydraulic chamber.