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Kerry D. Wong

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Lab Power Supply Build Using Old Power Bricks

January 5, 2021January 5, 2021 kwongLeave a Comment on Lab Power Supply Build Using Old Power Bricks

Over the years, I have accumulated many used computer power bricks. Although I could just use them by themselves to […]

Electronics Comparator, LM338, LM393, Power Brick, PSRR, Relay, Switching Power Supply

Visualizing Comparator and Op Amp Hysteresis

November 25, 2014 kwong1 Comment on Visualizing Comparator and Op Amp Hysteresis

Hysteresis can be added to a comparator circuit to improve its stability, especially when the input signal is noisy. In […]

Electronics Comparator, Hysteresis, LM358, LM393, LMC662, NE5532, Op Amp

Adding a Fan Controller to Topward 6603A

December 8, 2012 kwong39 Comments on Adding a Fan Controller to Topward 6603A

I did a review on Topward’s 6603A linear power supply last time. In my opinion, Topward 6000 series power supplies […]

Electronics Fan Controller, Linear Power Supply, LM393, Thermistor, Topward 6000, Topward 6603A

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