The full-wave rectifier bridge, D1 through D4 to rectifies the AC into pulsating DC, then filtered by C1. When 230VA or 120VAC (USA) is provided, step-down transformer-T1 changes the power line AC to about 30VAC. This regulated power supply included a transformer-T1, a bridge-D1…D4, and the 38V DC filtering voltage regulator circuits, which consists of C1, C2, R1, R2, R3, Q1, and Q2. We use the Simple Zener diode voltage regulator as main ideas, and two transistors to increase current to the load at 1A-2A. This circuit is one of the right choices. We have many ways to use it, but what is best for him. My friend is learning about CNC, he wants a 38V Regulated Power Supply for servo motor. So, for this reason, we should keep it cold with an effective heat sink. And it will result in enormous heating problems. The whole input voltage will be dropped across the power transistor. The VEC is 20V-5V = 15V So, the wattage is 15 watts. It needs to dissipate wattage is 7V x 1A = 7W. The voltage across the transistor (VCE)is 20V -12V = 7V. It needs to dissipate wattage is 5V x 1A = 5W. The voltage across the transistor (VCE) is 20V -15V = 5V. It is effectively a dropper resistor and must dissipate heat according to ohms law. The transistor of C is dropping the most voltage. At 1A the current.ĭo you know which transistor has the most heat loss? Or…
![2n3055 transistor specifications 2n3055 transistor specifications](https://cdn.datasheetspdf.com/pdfhtml/0469/956148/page-000001.png)
It must dissipate or reduce it.ĭo you see an image? It is simple. The transistor-Q1 works look like a resistor.
#2n3055 transistor specifications series#
In this series pass transistor regulator. Of course, energy will be expressed by heat. It should reduce the loss of energy in the circuit to a minimum. The transistor- 2N3055 can power load current up to 2A. The circuit will induct them into the transient noise. The power supply has a stray magnetic field. R1 increases the stability of the load circuit.C3 is a 0.047uF decoupler capacitor to filter out the transient noise.C2 keeps the reference voltage to be stable better.C1 is a smoothing capacitor at an input.Thus, it has a much more stabilized output. The advantage of this circuit, we can use a tiny current to Zener diode and base of a transistor. Because the voltage of Base-emitter less, transistor Q1 works less too. So it keeps the output voltage to be a constant level. But the base-emitter voltage rises up, transistor Q1 works more. In general, the output voltage is low down. In the circuit, the transistor has a proper gain and changing of VBE help it. Since it is a power supply that regulates a certain power output. NPN and PNP transistors are interchangeable if you remember one simple rule: A bipolar transistor is essentially two back-to-back diodes with the base being the common connection. On the left is an NPN (negative-positive-negative) transistor and on the right is a PNP (positive-negative-positive) transistor.This voltage is still suitable for many loads using the 12V supply such as receiver radios. ③ Are NPN and PNP transistors interchangeable? ② What is the DC current gain in TIP3055?ĭC Current Gain – hFE = 20-70 IC = 4.0 Adc Its corresponding PNP transistor is TIP2955. It is the best device for power swapping circuits, parallel and series controllers (regulators), output phases and high power amplifiers. TIP3055 is a silicon epitaxial-ignoble NPN transistor, which is assembled in TO-218 malleable parcels. Note: Please check their parameters and pin configuration before replacing them in your circuit. On the process side ST is leading the way with advanced FD-SOI (Fully Depleted Silicon-on-Insulator) technology. STMicroelectronics is the result of the 1987 marriage between famed semiconductor companies SGS Microelettronica of Italy and Thomson-CSF Semiconductor of France. In an application such as power supplies, the metal are the most recommended. Heavy envelope are better because dissipate more heat as well. Also note that there are 2N3055 in lightweight aluminum housings and heavy metal casing. Thus, an assembly in which the transistor will work at the limit, the metallic type is also as indicated. The electrical characteristics of the two transistors are the same, however, by its casing, the metal 2N3055 has a slightly greater ability to dissipate heat. The TIP2955 is a complementary PNP transistor for the TIP3055. It is related to the load.įollowings are TIP3055 Symbol, Footprint, and 3D Model. The collector is for the current inside drive. The base administers the biasing of the transistor. The emitter is for an external drive of current.
![2n3055 transistor specifications 2n3055 transistor specifications](https://s2.bukalapak.com/img/28548588292/large/data.jpeg)
These are the main pinout TIP3055 which are well-defined beneath.