Answer / iamdon

A pulse transformer is a transformer that is designed for
transmitting RECTANGULAR ELECTRICAL PULSES(pulses with fast
rise and fall times) of a relatively CONSTANT AMPLITUDE. A
Pulse transformers by definition have a duty cycle of less
than 0.5.

Small power versions are used in digital logic and
telecommunications circuits.
Medium-sized power versions are used in power-control
circuits such as camera flash controllers.
Larger power versions are used in the electrical power
distribution system.

To minimise distortion of the pulse shape,a pulse
transformer needs to have
1)Low values of leakage inductance and distributed
capacitance.
2)High insulation resistance and high breakdown voltage.
3)Good transient response.

What are the characteristics of negative feedback?

0 Answers  

---

why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?

0 Answers  

---

If breaker is undefined position, first step to do.

0 Answers   KSEB, L&T, Siemens,

---

when we put inducter in neuteral grounding of genrator.

3 Answers  

---

what is the best transformer oil breakdown voltage?

0 Answers  

---

---

What meant by lagging and leading? When if they are occurred what preventive methods should be taken?

14 Answers   ABB, L&T,

---

what the purpose of protection signaling equipment in substation?

2 Answers  

---

what is die electric strnth of transformer ?

0 Answers  

---

Kindly give the brief explanations for checking 12.5 kvar 440V, 25 KVAR 440V, 12.5KVAR 690V, 25 KVAR 690V capacitors microfarad values. what is the microfarad values for the above four type of capacitors, and give the formula explanations briefly. I know F-50HZ, voltage, and capacitor.

1 Answers  

---

HOW TO CHECK THE VECTOR GROUP OF A TRANSFORMER YD11?

0 Answers   Siemens,

---

5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch

0 Answers  

---

why is using sensor?what is differece between photoelectric and proxmitty?

0 Answers  

---