DRIVER FOR LASER DIODE AND LASER POINTER USING THE DRIVER

摘要

PURPOSE: To reduce spike noise down to a level having no adverse effect on a laser diode by employing a solid electrolytic capacitor containing an organic semiconductor electrolyte as the output capacitor for a DC-CD converter. ;CONSTITUTION: A step-up converter comprising an integrated circuit IC1 and its peripheral circuits is combined with a power controller comprising transistors TR1, TR2 and their peripheral circuits. An aluminum wound solid electrolytic capacitor impregnated with fused TCNQ complex salt as an electrolyte is employed for each capacitor C1, C2, C3 in the step-up converter. This constitution reduces the spike noise of the step-up converter significantly thus allowing stabilized oscillation of laser diode using only one battery.;COPYRIGHT: (C)1995,JPO