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.
Answers were Sorted based on User's Feedback
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.
Is This Answer Correct ? | 9 Yes | 3 No |
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.
Is This Answer Correct ? | 6 Yes | 1 No |
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.
Is This Answer Correct ? | 2 Yes | 0 No |
what is d difference between digital image processing & digital signal processing?
Dear All, How can I make 5VDC with 500mA current rating from our 230VAC. Can anybody help me with different answers? I am Ansari-9820016777.
What do you mean by donor and acceptor impurities?
why e1 capacity 2048 define details?
http and https,difference?????
WHAT IS THE DIFFERENCE BETWEEN STANDARD TCP/IP AND HP TCP/IP?
What is a bcd?
why did the ground terminal place in 3ble plug?
The charge of an electron is equal to
Define what is its magnitude for ge and si?
write a program in c++ for finding the given no. is odd or even without using any airthmatic operater?
Filtering can be done with ?