How to Safely use TIP120 Transistor within a Circuit? The TIP120 complement transistor is the TIP125 transistor. Complement & Equivalent of TIP120 NPN Transistor: Controlling the lighting: When a user selects a product, this transistor can be used to turn on a light that illuminates the selected product. Monitoring the inventory: The TIP120 Transistor can also used to monitor the inventor by connecting the transistor to a sensor that detects when a product is dispensed, the vending machine can keep track of how many products are remaining and alert the operator when supplies are running low.Ĭ. Control the dispensing mechanism: for example, when a user selects a product and makes a payment, the TIP120 can be used to activate a solenoid or motor that dispenses the product.ī. In a vending machine the solenoid driver circuit using TIP12o is used toĪ. The solenoid driver circuit using a TIP120 transistor is used in many applications like vending machines, remote access systems, and door-locking systems for offices, hotel making them a key component to be used in many types of electromechanical systems etc. Therefore solenoid coil gets supplied & works like an electromagnet. Similarly, once the control switch is turned ON, the transistor will turn ON due to the base-emitter voltage. Once the control switch is turned OFF, then the transistor will be turned OFF, so the solenoid used in the circuit does not get supplied. The output of the IC 7805 voltage controller is connected to the base terminal of the TIP120 transistor using the control switch. One end of the solenoid is connected to the collector terminal of the TIP120 NPN Darlington Transistor. Here, the input voltage supply applied to the solenoid is 12V. So IC 7805 voltage controller is utilized in this circuit to manage the input DC voltage. In the above circuit, the TIP120 transistor needs the least base voltage. The solenoid driver circuit is designed by using the above basic electronic components. The required components to make this solenoid driver circuit mainly includes 12V Solenoid, TIP120 NPN Darlington Transistor, 12V DC supply, IC 7805 voltage regulator, 1N4007 diode, 0.1♟ capacitor, 2.2KΩ & 4.7KΩ resistors and switch. Here we are going to design a solenoid driver circuit that uses the TIP120 transistor. The solenoid can be used as a switch of power thus, it requires the driver circuit. So this is the most expensive use of a loop of wire. In this way it is used to change the electrical supply into linear motion. This magnetic field can be used to move a mechanical component, such as a plunger or valve, by attracting it towards the core. When an electric current is passed through the coils, it creates a magnetic field that is concentrated in the core. Solenoid is a loop of wire that is wrapped around a cylindrical core made of ferromagnetic material, such as iron. The solenoid driver circuit using a TIP120 transistor is shown below. TIP120 NPN Darlington Transistor Circuit: Solenoid
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