Promoted
Kampala, Nakawa
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Generic HP Small Pin Laptop/Adapter- Black
Adapters
Type
HP
Brand
Brand New
Condition
Delivery
Kampala
1-2 days
USh 5,000 - 10,000
Originally, most AC/DC adapters were linear power supplies, containing a transformer to convert the mains electricity voltage to a lower voltage, a rectifier to convert it to pulsating DC, and a filter to smooth the pulsating waveform to DC, with residual ripple variations small enough to leave the powered device unaffected. Size and weight of the device was largely determined by the transformer, which in turn was determined by the power output and mains frequency. Ratings over a few watts made the devices too large and heavy to be physically supported by a wall outlet. The output voltage of these adapters varied with load; for equipment requiring a more stable voltage, linear voltage regulator circuitry was added.
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