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Question
plz do tell me therotically  how to make a ckt using a pnp 
transistor to operate a 24V relay. push button,diodes, 
resistors,capacitor and one pnp transistors are available.
 Question Submitted By :: Sorav
I also faced this Question!!     Rank Answer Posted By  
 
  Re: plz do tell me therotically how to make a ckt using a pnp transistor to operate a 24V relay. push button,diodes, resistors,capacitor and one pnp transistors are available.
Answer
# 1
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.
 
Is This Answer Correct ?    2 Yes 0 No
Sonia
 
  Re: plz do tell me therotically how to make a ckt using a pnp transistor to operate a 24V relay. push button,diodes, resistors,capacitor and one pnp transistors are available.
Answer
# 2
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.
 
Is This Answer Correct ?    0 Yes 0 No
Rahul
 
 
 

 
 
 
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