User:Waveguy/TODO

fix articles:
 * Assembler code example of parity calculation
 * actuator

new articles: NRZI, some google searches around RFID..
 * http://www.google.ca/search?q=circuit+%22RFID+reader+%22+schematic&as_qdr=m3
 * http://www.google.ca/search?q=circuit+RFID+schematic+references&as_qdr=m3

design notes for a receiver circuit
Critical values for this circuit are:
 * L1,C1 affect the frequency of the first stage; construction hint: for C1, use two capacitors in parallel: a 1.5nF, and a 0 .. 1nF trim cap.
 * L2 affects the frequency of the amplifier stage.

Design notes:
 * Disclaimer: I designed this with the help of a simulator (P-Spice student) and have not built a real one; consequently the design is incomplete, I welcome adjustments. It may make a nice little project.
 * The 33 k ohm resistors affect the Q value of the first stage.
 * I added the 50 M ohm resistors to get the simulator to stop complaining about floating leads.
 * Q1 is a 2N6059, a darlington power transistor according to the simulator. It has a high input impedance.