Archive for August 2011

PWM (Part 1)

Part 1, 2, 3, 4 PWM stands for Pulse Width Modulation This is a very convenient function for driving high latency loads such as heaters and even light emitting devices or specific modules such as servo motors. The principle of operation consists in applying trains (so as to say cycles) of energy to the load. […]

Sentence of the day

“Simplicity is the ultimate sophistication” Leonardo da Vinci

EVSE (Part 1)

EVSE stands for Electric Vehicle Supply Equipment. The term EVSE has been in use for a long time, and the 1996 NEC and California Article 625 defined (PDF) EVSE as: The conductors, including the ungrounded, grounded, and equipment grounding conductors, the electric vehicle connectors, attachment plugs, and all other fittings, devices, power outlets or apparatuses […]

FIR Filters (Part 3)

Part 1, 2, 3 Note: As usual, the code samples are extracted from a standardized library (actually PlainFIR). Please check this page if you are interested in the code.. From the previous readings, we understand that the most complex part of the whole process is the filter design. For sake of simplicity, I decided to program the window […]