And Gate Circuit Diagram Using Diode. Circuit Diagram of Diode based OR Gate OR gate can be realized by Diode Resistance Logic DRL or by Transistor-Transistor Logic TTL. AND gate may be realized by the use of diode and transistors.
In this Instructable we will build DRL circuits. It is known as AND gate because the output is high only when all the inputs are high. End terminals of the Resistor are connected to P- terminals of the diode and ve of 9 v battery respectively.
Circuit diagram of two input positive logic OR gate using diodes and a resistor is shown below.
Logic inputs are given to n terminal of diodes. A 5V Power supply. AND gates can be built using a variety of electronic components including transistors and mechanical pushbuttons. Therefore the output is logic 1 because there is no voltage drop across the resistor R.
