Small Battery Charger design help

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badar shah

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Guys i am trying to make a small battery charger for a small 3V dry cell battery. i designed this circuit which works on 220VAC and 50Hz. Circuit is capable of supplying 5V DC and 200mA current. Zener diode is of 5V rating. Can you please take a look at my design and please tell whether the circuit would cut off at 4.2V? and also is there any correction needed? I am not being able to simulate battery charging on Proteus. Thanks in advance.

 

please bear in mind that your circuit has no safety in handling the battery when you insert and remove . may get a shock!

apart from that , the zener diode has no current limiting resistor.
also for led , there is no one to limit.

and lm741 biasing...
 

LM741 has a short output current of 25-35mA, how do you expect it to charge a battery even if everything else works fine?
 

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Thanks for your replies. So from above suggestions i learned two things.
1) i must introduce 200mA fuse.
2) i must use a transistor at the output and switch the comparator inputs.
Am i right?
which value of resistor i must use with zener, to limit the current to 200mA?

but i biased the lm741 incorrect?
sorry i didnt limit the current for led because i drew it in simulator..
 
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