Its function is to store the energy emitted by the solar cell array when it is illuminated and to supply power to the load at any time. The basic requirements for solar cell power generation for the battery pack used are: a. low self-discharge rate; b. long service life; c. strong deep discharge capability; d. high charging efficiency; e. less maintenance or maintenance-free; Wide range; g. low price.
Charge and discharge controller
It is a device that can automatically prevent overcharging and overdischarging of the battery. Since the number of cycles of charging and discharging of the battery and the depth of discharge are important factors determining the service life of the battery, it is indispensable to control the charge and discharge controller of the battery pack for overcharging or overdischarging.
Forstner bits, flat-bottomed to drill holes in wood materials, they can cut on the edge of a block of wood, and can cut overlapping holes; for such applications they are normally used in drill presses or lathes rather than in hand-held electric drills. Because of the flat bottom of the hole, they are useful for drilling through veneer already glued to add an inlay.
The bit includes a center point which guides it throughout the cut (and incidentally spoils the otherwise flat bottom of the hole). The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely.
Forstner bits have radial cutting edges to plane off the material at the bottom of the hole. The bits shown in the images have two radial edges; other designs may have more. Forstner bits have no mechanism to clear chips from the hole, and therefore must be pulled out periodically.
Forstner Bits,bosch forstner bits,colt forstner bits
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