#2N3055 TRANSISTOR REPLACEMENT HOW TO#
#2N3055 TRANSISTOR REPLACEMENT SERIES#

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-D1вЂ¦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.Дo you know which transistor has the most heat loss? OrвЂ¦ It must dissipate or reduce it.Дo you see an image? It is simple. The transistor-Q1 works look like a resistor.

#2N3055 TRANSISTOR REPLACEMENT 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. Sorry if I added to the drama.This voltage is still suitable for many loads using the 12V supply such as receiver radios. If you don't hear a difference, and don't experience spurious sound effects, there may be nothing to worry about. Simple frequency response measurement between old and modified channels (20-20kHz) should reveal any issues. This may all be some folklore invented to make old legacy designs seem more exotic, but basically you don't want to add any new beep, burps, or buzzes.ДЄ more subtle effect might be a bump or increased output at HF if the original design compensated for the slower original part with boost that is no longer needed. I can't get more specific without studying schematics which I do not intend to do. Marginal stability might be seen as ringing on a square wave. Artifacts might include outright instability which would be visible as oscillation.

#2N3055 TRANSISTOR REPLACEMENT HOW TO#

Frequency response, noise level, slew rate (not sure how to measure that)?Compare the modified and unmodified channels side by side, terminated into a nominal load, at 20khz sine and perhaps with impulse stimulus.Д«asically I would be looking for some bad behavior due to unanticipated consequence of using faster part than original design used.

2n3055 transistor replacement