replacement diode

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ahmedragia21 said:
Can i use 1N4001 Diode instead of 1N457 Diode because i dont have it in egypt ?
The 1N457 is a small signal diode..
Click to expand...

Depends on the circuit and how it's being used. In most cases, yes it might be fine, in a few cases maybe not as well. Can you tell us what it's being used in or better yet a circuit diagram?

Lefty
 
Just compare the datasheet and think about what you are using it for. The big difference between the two is current handling capability. So look at your circuit, is it enough?
 
Well , i will make this circuit , its a battery charger
Car Battery Charger

Thanks for the replies.

Would you please explain the circuit also ? i really wanna understand it
is this op-amp used as a compartor or what ?
 
Last edited:
ahmedragia21 said:
Well , i will make this circuit , its a battery charger
Car Battery Charger

Thanks for the replies.

Would you please explain the circuit also ? i really wanna understand it
is this op-amp used as a compartor or what ?
Click to expand...

A 1N4001 should work fine in that circuit. The op amp is configured as a current sensing switch as explained at the top of the diagram. Looks like a pretty good circuit.

Lefty
 
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