Poundland LED table lamp teardown.
bigclivedotcom 3:49
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Internal analysis of a cheapo Poundland (a UK dollar store) adjustable LED table light.
It's nice that it uses 3 AA cells as opposed to other lights that use AAA cells (which have a third the capacity of AA cells.) It's also nice that it uses 3 cells to ensure the batteries get used relatively efficiently. Some lights use just two cells that only have a fraction of their energy used due to the high forward voltage of the LEDs. (typically 2.6 to 3V)
It also uses a sensible resistor value to give roughly 20mA through each LED with fresh alkaline cells.
It's nice that it uses 3 AA cells as opposed to other lights that use AAA cells (which have a third the capacity of AA cells.) It's also nice that it uses 3 cells to ensure the batteries get used relatively efficiently. Some lights use just two cells that only have a fraction of their energy used due to the high forward voltage of the LEDs. (typically 2.6 to 3V)
It also uses a sensible resistor value to give roughly 20mA through each LED with fresh alkaline cells.
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