School project

How to make high voltage: This is the circuit to make high voltage. normally we need high voltage in the factory. or in our daily life, we need this circuit to kill mosquitoes. we buy the bat to kill the mosquito. in the bat got this type of circuit. we …

Motor forward and reverse circuit: Sometimes we need a circuit to make the motor move forward and reverse. here in this circuit, we can see the simple circuit. only used a 6-pin switch. this switch changes the voltage only. this circuit changes the voltage only. positive to negative and negative …

how to make water level?: how to make water level indicator circuit diagram. this circuit can use anywhere for water or oil levels. here used only 3 led for 3 levels. if we want to make more levels then we can increase more transistors and LED. here used NPN bc547 …

how to make a delay timer circuit: This is a delay circuit diagram. we can set the time. because this circuit has an adjustable variable, we use 1 mega adjustable variable to set the time. sometimes we need 5 seconds. sometimes we need 10 seconds. It’s needed according to our …

speed controller circuit diagram: This is a motor speed controller circuit diagram for 12 voltage motor. we also can use it for other work. This is a simple DC motor variable speed controller circuit. The circuit makes up of a timer IC NE555. power motor driver transistor IRFZ44N. This transistor …