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Piyush
New Member

4 Posts
Posted - Sep 07 2010 :  01:41:34 AM  Show Profile  Reply with Quote
Sir actually i want to ask that can i use lm741 instead of lm308 in infrared remote project
http://aaroncake.net/circuits/irremote.asp

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Sep 07 2010 :  08:48:21 AM  Show Profile  Reply with Quote
I am not knighted by the Queen of England to be a SIR, I am just an ordinary guy.

I did not calculate the frequency of the project. An LM308 opamp is obsolete and has been discontinued for many years. A 741 opamp is also osbolete but is still made. The 741 opamp has trouble with frequencies above only 9kHz but most other newer opamps easily go to 100kHz.
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aravindj36
Apprentice

India
57 Posts
Posted - Dec 31 2010 :  02:51:23 AM  Show Profile  Visit aravindj36's Homepage  Reply with Quote
Try using a CA3140 op-amp it should work but read the datasheet carefully before you try
Help me my amplifier is on fire and my speaker is inside a beaker
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