Forum Discussion
MEXICOWANDERER
Jun 06, 2016Explorer
More disassembling of the cuckoo clock, time...
The majority of the Btu's generated in a switched power supply originate in the major inductor. A stupid external 20 mm Varistor across incoming line voltage seems to help tame a lot of line voltage noise.
Genuine SILVER based heat sink compound under the bi-polar transistors increased case temperatures by some 5F @ 74F ambient. That part I like best.
Newer FSMART CHARGERS attempt to control output by throttling SCR's, rather than switch transformer windings and rectify with silicon rectifiers. No, these losers pulse AC signals with transistors. Can't think of a better way to dump reliability on it's ear. Oooooooo, the "Fully Automatic" label attracts customers like green flies to ----- ----. Then the discrete parts and logics have part numbers buffed off. Chew and spit chargers. When they quit they contaminate landfills. I continue to repair 30-year-old chargers and wonder about the IQ of today's consumer...
The majority of the Btu's generated in a switched power supply originate in the major inductor. A stupid external 20 mm Varistor across incoming line voltage seems to help tame a lot of line voltage noise.
Genuine SILVER based heat sink compound under the bi-polar transistors increased case temperatures by some 5F @ 74F ambient. That part I like best.
Newer FSMART CHARGERS attempt to control output by throttling SCR's, rather than switch transformer windings and rectify with silicon rectifiers. No, these losers pulse AC signals with transistors. Can't think of a better way to dump reliability on it's ear. Oooooooo, the "Fully Automatic" label attracts customers like green flies to ----- ----. Then the discrete parts and logics have part numbers buffed off. Chew and spit chargers. When they quit they contaminate landfills. I continue to repair 30-year-old chargers and wonder about the IQ of today's consumer...
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