Tag Archives: STM

STM VIPer 53

The STM VIPer 53 is an off-line primary switch.  It combines a PWM controller with a HV MOSFET that can switch the mains voltage (85-265V).  I looked at a Power Integrations (LNK306) competitor to this device I found in a stove … Continue reading

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LM393 Dual Voltage Comparators

The LM393 is a pretty common chip made by TI, STM, ONSemi (And probably others too).  This one is from 2006 and the package was branded with STMicro logo yet unusually (For a big semi company) the silicon die has … Continue reading

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ST SMOOTH L6283

The ST L6283 is a HDD spindle motor and VCM (voice coil motor) controller from 1999. It was on the board from the Western Digital/La Cie hard drive that I tore down recently. I could not find a data sheet … Continue reading

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Bell ExpressVu Satellite TV Set-top box

This is a an ExpressVu 4100 set-top box from around 2006:- The 4100 was (According to Wikipedia) the last SD set-top box that Bell used, getting discontinued in 2012. Opening it up, there is a single large (20.6cm x 18.6cm) … Continue reading

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