The main current will flow from the positive rail, through the motor, into the collector of the transistor (right pin) and out of the emitter (left pin) to ground. Since we are using an NPN transistor, the negative lead of the motor is interrupted by the transistor. This means the more current that we have flowing to the base of the transistor, the more current will flow through the motor. The transistor is a current controlled device. This circuit will control the speed of the motor. If we have too much current flowing to the base, the transistor will be damaged. The reason I’m using the 250 Ohm resistor is to limit the amount of current flowing to the base of the transistor. In this example, I’m using a 10K pot in series with a 250 Ohm resistor. In this example, we will use an NPN transistor to control a motor.
Total numbers of transistors =2*( 3-input NAND gate)+1*(2-input NOR gate)=2*6+1*4=16 3.8 Figure P3. Subsequently, question is, how many transistors are in XOR gate? While a stan- dard static CMOS 2-input XOR gate is implemented using 10 transistors, only 8 transistors are sufficient when trans- mission gates can be utilized.Īlso to know is, how many transistors are needed in a 3 input CMOS and gate?Įach transmission gate requires 6 transistors ( 4 for mux + 2 for inverter gate). Keeping this in view, how many transistors in an OR gate?ĪND, OR gates: 3 transistors. A 4 input NAND gate requires 8 transistors, add an inverter and you have 10 transistors. A NAND gate requires 4, a 2 input AND requires 6.
A NOT gate requires 2 transistors, 1 NMOS and 1 PMOS. CMOS is made up of NMOS and PMOS transistors.
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