HIGH-EFFICIENCY ILLUMINATING APPARATUS FOR TRACTOR AT HIGH SPEED

• Main Authors: HU CUIPEI, QIAN GUANGYUE, LI BAOGUI
• Format: Patent
• Language: English
• Published: 09.08.1989
• Edition: 4
• Subjects: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING ORSUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES INGENERAL; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The utility model belongs to a light control device for tractors, suitable to low-speed high-efficiency lighting fittings of tractors, using a three-phase permanent-magnet alternator and three single-phase permanent-magnet alternators as the lighting energy resource. The technical characteristics lie in that the light control device adopts four automatic switch circuits: an integrated circuit, a transistor discrete circuit, an alternating current relay coil circuit and a throttle valve; the device also adopts a hand switch and a bidirectional thyristor basic triggering circuit, in order to control tractors through line voltages and diploid single-phase electric voltage or the parallel connection of three phases to reduce the impedance phase voltage in a power generator at low speeds, so as to supply power for a front lamp, and to supply power with the phase voltage at high speeds.