With an n- and p-channel MOSFET, you can easily implement a single-pole double-throw (SPDT) switch to isolate part of a circuit and power it from a secondary supply for standby operation while the rest of the circuit is off (Figure 1). By using a com…
DESCRIPTION The DG449 is a dual supply single-pole/double-throw (SPDT) switches. On resistance is 38 and flatness is 2.6 max over the specified analog signal range. These analog switches were designed to provide high speed, low error switching of…
Sound card based RFID sniffer/emulator (Too tired after recon.cx to do draw the schematics better than that :) Stay tuned for the next version including Tag emulation.) baudline FFT signal analyzer for sniffing LF RFID tags using our sound card based…
Transistor Tutorial Summary Transistor Tutorial Summary Bipolar Junction Transistor Tutorial We can summarise this transistors tutorial section as follows: The Bipolar Junction Transistor (BJT) is a three layer device constructed form two semiconduct…
80MHz 12 bit ADC processor LPC4370.LPCxpresso do a LPC LINK2 and LABTOOLS open source oscilloscope demo set. (£84 from Mouser, seems quite well liked.) The LPC LINK2 is £14 + VAT from Mouser, it has the ADC on board. The Lab tools board has signal co…
Classnames is a simple yet versatile javascript utility that joins CSS class names based on a set of conditions. We are going to build a simple toggle switch that relies on state to determine what CSS classes will be applied. //className = require('c…
10 Things ASP.NET Developers Should Know About Web.config Inheritance and Overrides Wednesday, January 18, 2012 ASP.NET The ASP.NET configuration system is build around the idea of inheritance: Each Web.config file applies configuration settings to t…
