AND and OR gate?

With which diodes can i realize the AND gate and the OR gate (like diodes 1N4007, 1N4148) and with which foemuls can I define the value of the resistors?

Answer:
I have used 1N4148 diodes. The 1N4007 is a general purpose rectifier and is slower than the 1N4148 -- which is used for fast switching applications (like making diode-logic-gates).

You can make a crude 2-input AND gate out of 2 diodes and a resistor. The resistor can be anywhere between 2 kOhms to 5 kOhms, depending on what the output is driving.

Here is an example circuit:

http://hyperphysics.phy-astr.gsu.edu/hba...

You can also take the OR circuit and instead of a pull*down* resistor to ground, make it a pull*up* resistor to Vcc and it becomes an AND gate.

I just had to kludge one of those on my latest project, because the software guy wanted some extra decoded address spaces -- not in the original spec.

.

The answers post by the user, for information only, FunQA.com does not guarantee the right.



More Questions and Answers:
  • How much does dirt weigh per cubic yard?
  • What is a landfill?
  • I am looking into buying a wind turbine for my house but the city i live in has low height limits.?
  • Can anyone supply me with drawn or printed plans for a jet engine?
  • What are the types of imperfection in solids? give their meaning?
  • Optical Engineering with no physics in high school?
  • How to design a panel board having a load of 250 Amps connected to it?
  • What is meaning of depth of cut in highway engineering?
  • Lead acid battery ?