#2n3055 transistor series#

With transistor going to high resistance state in OFF mode, the collector current also becomes zero bringing motor to stop. This motor will keep rotating until there will be base current.Īfter a certain time when the button is released the base current becomes zero and the transistor gets turned OFF. Having transistor acting as short circuit in ON state there will be collector current which flows through motor making it rotate.

#2n3055 transistor series#

With this closed loop a current flows through base of transistor and with base current flow the transistor gets turned ON. 10Pcs 2N3055 NPN Power Transistor 15A 100V 115W NPN High Power Transistor 2N3055 Transistors for Power Supply Circuits Series and Shutdown Controllers 1069 (1.07/Item) Get it as soon as Thu, Sep 15 FREE Shipping on orders over 25 shipped by Amazon Only 13 left in stock - order soon. When the button is pressed at certain time, the voltage V2 forms a closed loop with base-emitter of transistor as can be seen in circuit diagram. With no base current the transistor acts as open circuit and the entire supply voltage V1 will appears across it. Under initial conditions the button will be open and no current flows through the base of transistor.

The 100Ω resistor is provided for limiting the current through base. The trigger source and power source must share a common ground for the circuit to work. Here we are going to use 2N3055 as a simple switching device to drive a motor and is in common emitter configuration.Īs show in circuit we are using a motor as the load and the gate signal for turning ON the transistor is provided by 5V source with button being the triggering device. The device has good amplifying factor and also the gain is almost linear making 2N3055 one of best solution for power amplifiers.Īs mentioned earlier the 2N3055 can be used for any NPN transistor applications but for understanding the functioning of device let us consider a simple application circuit as shown below. 2N3055 is one of the basic transistors available in the market for cheap and with features being suited for many applications.ĢN3055 is also used in audio power amplifiers.

Operating temperature range: -65✬ to +200✬ĢN6673, 2N6675, complementary pair- MJ2955ĢN3055 is preferred when you want a simple switching device for medium power loads.

Maximum voltage across collector and base: 100V DC.

Maximum current allowed through base: 7A DC.

Maximum voltage across base and emitter: 7V DC.

Maximum current allowed trough collector: 15A DC.

Maximum voltage across collector and emitter: 60V DC.

Low collector-emitter saturation voltage.

Normally used as trigger to turn ON the transistor The pin configuration of 2N3055 is given below. Like any other transistor 2N3055 has three pins namely EMITTER, BASE and COLLECTOR. The device is designed for general purpose switching and amplifier applications. The datasheet for the 2N3055 says VCEO=60VDC and IC=15A.2N3055 is a general purpose NPN power transistor manufactured with the epitaxial base process, mounted in a hermetically sealed metal case. I chose the load size to simulate the max amperage that I would allow through this circuit. Is there a mistake with the Spice model, or am I missing something here?Īs you can see, the load is only dropping ~3.5V while the transistor is dropping the rest. The datasheet for the 2N3055 says VCEO=60VDC and IC=15A.

In order to troubleshoot the circuit I reduced it to the bare minimum that still returns the same results and this is what I ended up with (the graph shows the voltage and amperage at the collector):Īs you can see, the load is only dropping ~3.5V while the transistor is dropping the rest. The problem came when I made the circuit in LTSpice and the results were not what I expected. The idea was to use a pair of 2N3055 transitors in parallel (one with a logical inverter on the input) to switch the outputs between direct access to ground and access to ground through the ammeter. I have a combination volt/ammeter that I would like to use to monitor the selected output while still being able to use the other outputs. I'm building a bench power supply and would like to switch between several outputs.