Interested to Buy Any Domain ? << Click Here >> for more details...
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.
- 3 Answers
- 7406 Views
- Siemens, I also Faced
- E-Mail Answers
Answer Posted / 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 |
Post New Answer View All Answers
How does a signal differ from a wave?
What is meant by the deflection factor of a cro?
What are digital circuits?
Hi, sir. im in need of placement questions to train myself as a professional engineer. this is my kind request.
Where we can split E1? (RRI, E1T1 & FIU)
what are thyristor family and explain it?
where and why do we use stright and cross cable?
Explain why is the diffusion technique of formation of resistor most widely used?
Explain when a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of silicon will be higher than that of germanium, why?
what is the significance of transistor number (exam. BC557,CIL188 etc) ?
What are the types of commutation? (Or) turn off methods?
compare the delay in sending x-bit msg over k-hop path in ckt switched nw nin lightil loaded packet swithed nw. the ckt setup time is s per hop,the packet size is p bits n data rate is' b' bps under what condition does packet nw have lower delay?
can anyone help me out to get HPCL officer's trainee paper's pattern....sureshec127@gmail.com
simplification of Boolean Expression- A+A'B.
hi.i want to get cleared about ece and want to know what are the topics or chapters which were in 11 and 12 grade.esp., in maths and physics?ans me soon.i am fresher.
