Download Circuit Cellar August 2010 by Steve Ciarcia PDF

By Steve Ciarcia

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Some of these live Linux distributions have utility programs for specialty areas, such as computer security and forensics, and they are all free. com for a listing. I Devlin Gualtieri received his PhD in Solid-State Science from Syracuse University in 1974, and worked for many years doing research for a major aerospace company. Now retired, he spends his time doing various embedded systems projects. org. com/ pub/Circuit_Cellar/2010/241. SOURCES PIC16F877 Microcontroller Microchip Technology, Inc.

From personal experience, I had a CRT monitor that interfered with the X10 signals whenever it was on. This was likely a harmonic of the horizontal oscillator feeding into the power line. Electrical devices with switching power supplies can put a lot of noise onto the power lines. In most cases, power line filters that plug between your device and the AC outlet will solve the problem. Compact fluorescent lights could be another noise source, but I haven’t had any personal experience with these.

R5 help calculate the values. only one dedicated IC for this purshould be equal to the paralleled values of R1, R2, pose, the RCV420 from Texas and R3. Often a Schottky diode is connected Instruments. It merely uses an TWO-WIRE TRANSMITTER between the quasi-ground and the positive input of internal resistor connected to a dif- the op-amp (anode to ground) to protect the input The circuit for a two-wire transfrom negative voltages. com many places in technical literature with some minor variations, but the analysis is generally omitted.

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