What is the pin configuration of 2N3055?
2N3055 Pin Configuration
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | Base (B) | Normally used as trigger to turn ON the transistor |
| 2 | Emitter (E) | Normally connected to GROUND |
| TAB or CASE | Collector (C) | Normally connected to LOAD |
What kind of package is 2N3055?
The 2N3055 is a silicon NPN power transistor intended for general purpose applications. It was introduced in the early 1960s by RCA using a hometaxial power transistor process, transitioned to an epitaxial base in the mid-1970s. Its numbering follows the JEDEC standard. It is a transistor type of enduring popularity.
What is the function of the transistor 2N3055 in the circuit?
The 2N3055 transistor is used as a series pass transistor within linear power supplies and also used in high power and medium-current circuits like DC to AC inverters, low-frequency power converters, audio power amplifiers.
How do you identify an open shorted and leakage transistor?
To test for key leakage:
- Perform the transistor gain test as described previously.
- Depress the LEAKAGE push button with the PERMUTATOR SWITCH in either of the transistor gain positions and read the leakage on the lower (ICBO/IGSS) scale of the meter.
How can you identify a bad BJT?
Connect the negative probe to the “N” or the emitter. A good transistor will read a voltage around 0.7V. A bad transistor will read otherwise. Otherwise means a value that is far away the 0.7V level.
Can capacitor increase current?
Capacitors have a direct relationship with current, where, if you increase the capacitance of a circuit, you increase the AC current.
Why does voltage drop when current increases?
Increasing the current causes a higher voltage drop across the internal resistance which reduces the source voltage. Some resistances increase their resistance when the current is increased caused by heating.
What are the common faults in BJT?
The main faults are open biased resistance, open connections, short circuit, etc. The below figure shows the transistor bias circuitry in which all voltages are referenced with the ground terminal.
How do you test a BJT transistor using a multimeter?
Hook the positive lead from the multimeter to the to the EMITTER (E) of the transistor. Hook the negative meter lead to the BASE (B) of the transistor. For an good NPN transistor, you should see “OL” (Over Limit). If you are testing PNP transistor, the meter should show a voltage drop between 0.45V and 0.9V.
How do you test a BJT?
How to test a bipolar transistor
- Step1: Connect the red probe to the base(B) of the transistor and the black probe to the emitter(E)
- Step2: Connect the red probe to the base(B) of the transistor and the black probe to the collector(E)
How do you know if a transistor is shorted?
Connect the red probe in turn to each of the three leads. If the other two leads don’t give the same reading when touched by the black probe, the transistor is PNP and it is bad. Multimeter tests determine if a transistor is blown (open or shorted) and provide a rough estimate of the transistor’s ability to amplify.
Do capacitors work with DC?
When used in a direct current or DC circuit, a capacitor charges up to its supply voltage but blocks the flow of current through it because the dielectric of a capacitor is non-conductive and basically an insulator.