The 6V battery flashlight is equivalent to a rechargeable flashlight system. The design of a 6V battery and lantern flashlight uses a krypton high intensity lamp, which are extremely bright and have standard miniature-flange-base and built in lenses.
6V battery and lantern flashlight is often rate by manufacturers and suppliers by its number of alkaline cells being used. Its lamp's operating voltage is approximately 1.25 volts per cell that makes the lamp voltage of a six-cell lamp equal to 7.5 volts. However, a 5v battery and lantern flashlight can only provide an approximately 30% light output and has a shorter lamp life compared to a 6V battery and lantern flashlight. In increasing the lamp life of a 6V battery and lantern flashlight, this flashlight should include the soft-start circuit.
A 6V battery and lantern flashlight inherently draw large start-up currents because of its filament's relatively low resistance when it is cold. A tungsten filament's resistance is typically ten times lower every time it is cold than when at normal operating temperature. When the full battery voltage of a 6V battery and lantern flashlight suddenly hits a cold filament, the inrush current is typically ten times the normal operating current. This instance normally happens when a lamp is likely to fail. However adding a soft-start circuit in a 6V battery and lantern flashlight nearly eliminates this large inrush current as well as allowing for a higher power lamp and reducing the probability of the lamp's failure during turn-on. The soft-start circuit present in a 6V battery and lantern flashlight may consists of an n-channel MOSFET in series with the lamp that helps ramps the lamp voltage up at a controlled rate to reduce the inrush current. A gate-to-source capacitor controls the ramp speed while the lamp turns on in approximately two seconds.
The charger of 6V battery and lantern flashlight is a 200-kHz step-down switching regulator that uses current limited constant voltage to charge the battery. However, when a discharged battery of a 6V battery and lantern flashlight connects to the charger, the charge cycle will then starts in a 1A constant-current mode.
As the battery of 6V battery and lantern flashlight accepts charge, the battery voltage increases until it reaches the programmed charge voltage of the cell. With this mode, the charge cycle enters constant voltage mode. And during this constant-voltage mode, the charge current drops exponentially.
If the charge current of 6V battery and lantern flashlight reaches approximately the 10% of the programmed current, the charge voltage drops to its float voltage. This dual-voltage approach of 6V battery and lantern flashlight can provide a faster charge and also provides an LED indication when the battery is nearly fully charged. The charger keeps the battery of 6V battery and lantern flashlight at this float voltage, thus keeping the battery in a fully charged condition. You can leave the charger indefinitely connected to the battery without damage to the battery, although battery damage can result if it is fully discharged.
The technology of a 6V battery and lantern flashlight is not far comparable than any wide beam technology in flashlights, however, for those campers who prefers budgeting in their camping trips, a 6V battery and lantern flashlight is always there to help you. Just like any camping furniture, camping chairs, camping tables, and camping kitchen equipments you need to bring for your camping gear trips, a 6V battery and lantern flashlight is also a necessity. |
