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A battery charger, recharger, or simply charger, [1] [2] is a device that stores energy in an electric battery by running current through it. The charging protocol—how much voltage and current, for how long and what to do when charging is complete—depends on the size and type of the battery being charged.
A "stun–lethal" fence may also consist of two fences; one set of wires forming a conventional pulsed DC non-lethal fence, the second set (interleaved with the first) forming a 6.6 kV AC lethal fence, energized when the DC fence detects an intruder. Alternatively it may consist of a single, AC or pulsed DC fence capable of running in "safe ...
The usable battery capacity of a first-generation electric vehicle, such as the original Nissan Leaf, was about 20 kilowatt-hours (kWh), giving it a range of about 100 mi (160 km). [ citation needed ] Tesla was the first company to introduce longer-range vehicles, initially releasing their Model S with battery capacities of 40 kWh, 60 kWh and ...
The North American Charging System (NACS), standardized as SAE J3400, is an electric vehicle (EV) charging connector standard maintained by SAE International. [1] Developed by Tesla, Inc., it has been used by all North American market Tesla vehicles since 2021 and was opened for use by other manufacturers in November 2022.
Surge Protection Device (SPD) for installation in a low-voltage distribution board. A surge protector (or spike suppressor, surge suppressor, surge diverter, [1] surge protection device (SPD), transient voltage suppressor (TVS) or transient voltage surge suppressor (TVSS)) is an appliance or device intended to protect electrical devices in alternating current (AC) circuits from voltage spikes ...
The battery voltage is usually 1.5 V. The resistor is ~1 kΩ, 1/4 W. The transistor could be a 2N3904, BC547B, 2SC2500, BC337, 2N2222, 2N4401 or other NPN. V ceo = 30 V, P= 0.625 W. A closed-loop regulated joule thief The waveform of an operating joule thief, showing a 30% duty cycle at approximately 40 kHz
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