Vespa PX 125 - 200 From 1984 - ON, 12V DC Battery Horn, Horn Casting Mounted

DescriptionVESPA PX 125 - 200 From 1984 - ON, Fitted with 12V DC Battery Horn, Horn Casting MountedHorn -OEM QUALITY 12V DC- Vespa PX (1984-)Colour main colour: silver Horns tension: 12 V current: DC outer diameter: 71 mm number of fixing holes: 2DescriptionAC/DC? AC stands for alternating current = alternating voltage DC stands for direct current = direct voltageAC Many old vehicles without batteries use alternating voltage as the on-board power supply. Only so-called buzzers can be connected to it. These are recognizable by a tone pitch which increases and decreases with engine speed.DC Due to the non-constant frequency. After 1984, some vehicles were equipped with a battery and a DC on-board power supply. Here the real horns are used, recognizable by a constantly constant pitch, independent of the engine speed.Exceptions There are some exceptions where a DC horn was used on German models, despite the AC on-board power supply. Piaggio used so-called horn rectifiers from 1984 onwards, with the introduction of the Lusso series. Here, a special bridge rectifier with downstream capacitors, which is only responsible for the horn, converts the AC on-board power supply for the horn into DC.