Answer / sonia

Apply a 24V to the base side with a resistor,emitter should
be grounded and output is taken from collector and add a
diode at collector side.Also put a capacitor for decoupling.

Answer / rahul

connect transistor in emitter follower configurations
means connect E terminal to gnd. connect relay on collector
apply req. biasing vlt. to transistor .
Connect diode parallel to relay to freewheel the energy
stored by the relay coil.
Also used resister to limit the current through base.

Answer / chandrajith o

circuit the pnp transistor in common collector mode.emitter directly shorted to Vcc ,use appropriate resistors to provide the potential divider bias for the base.connect the collector to gnd through the series combination of appropriate resistor,relay and pushbutton.when pushbutton is switched on ,the collector current which is approximately same as the emitter current flows,ther by the relay will be energised.use the diode parallel to relay to overcome the freewheeling effect.

What is voltage commutation?

0 Answers  

---

Explain the difference between plc and dcs?

0 Answers  

---

Difference between SONAR and RADAR? Can we use SONAR instead of RADAR? How can you 'swap' two numbers in two registers (using ALU), without using 3rd register?

1 Answers   BEL,

---

why the mobility of electron is high than hole?

4 Answers   Samsung,

---

What is forced commutation?

0 Answers  

---

---

if UT=4v & V LT=-2v the hysteresis voltage is equal to......?

0 Answers  

---

What is impulse response?

10 Answers  

---

What is diff b/w FIFA,FIPA,FIEA....?

0 Answers   NSN,

---

What is meant by negative converter group in a cyclo-converter?

0 Answers  

---

which sort of communication is better for distant commn? AM or FM? why

6 Answers   Cisco,

---

6. When Abis link is down, name the alarm that is generated at BSC

1 Answers  

---

How micro processor works without internal memory?

0 Answers  

---