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EEVblog

EEVblog #659 – Medical Plugpack Teardown

What’s inside an IEC60601-1 medical class 5V mains DC-DC plugpack? What is the difference between PCB clearance and creepage? A German FRIWO 5V FW7555M/05 brand medical grade isolation unit vs a cheap Wun Hung Lo consumer brand. Also a comparative look at transformer construction. Datasheets & Links: www.farnell.com/datasheets/30889.pdf IEC_60601 Rubycon …

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EEVblog #658 – Mailbag

Mailbag Monday. Dave opens his mail Forum HERE Spoilers: Keithley 177 Multimeter teardown schmeatic and Manual Commodore GL987R Calculator Teardown and VFD probing. Sharpie Hanger Kickstarter Podcast: Download

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EEVblog #656 – Pacemaker Monitor Teardown

What’s inside a dial-in pacemaker monitor system? Datasheets: LMV824 MAX4330 CNY64 Optocoupler ADSP-2185N DSP CX88168 Smart Modem with Voice CODEC MAX994 10bit ADC Meder Reed Sensor Probe shock video showing the piezoelectric effect Forum HERE Podcast: Download

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EEVblog #655 – Auction Score

Lots of test equipment auction goodness from Precision Mechatronics who went into liquidation. And is it possible to mod a system PSU with binding posts? Service manual HERE Keithley 2400 SMU Source Unit Agilent 54845A 1.5GHz Infiniium Oscilloscope Agilent E3646A dual output bench power supply Agilent 6641A and 6643A DC …

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