LED lamp apparatus for vehicles

摘要: In an LED unit, all of eight LEDs are connected in series. The voltage a power supply, that is, battery vehicle, 12 V, is insufficient for the LEDs. To cope with this, boosting circuit provided within control unit to boost about 16 V which then applied front end constant-current circuit, and detection near this detecting circuit. detected by compared reference drawn from amplified amplifier, input as signal into output so regulate boosted such manner lowest possible voltage.