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 Infrared remote control		  New Topic  Reply to Topic
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surajsun22
Apprentece

India
16 Posts
Posted - Aug 02 2010 :  2:38:29 PM  Show Profile  Reply with Quote
Hi.

today i was trying to make the infrared remote control as given here.
http://www.aaroncake.net/CIRCUITS/irremote.asp

but unfortunately i'm in little confusion with the -9v and GND terminals i mean where to connect both these.does both of them goes to -ve terminal of the battery???

thnx..

audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 02 2010 :  11:03:45 PM  Show Profile  Reply with Quote
The opamp in the receiver is missing a resistor from its pin 3 input to ground.

The receiver circuit has a dual-polarity supply. One is +9v and the other is -9V. The 0V terminals of both supplies are joined at ground.
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surajsun22
Apprentece

India
16 Posts
Posted - Aug 03 2010 :  01:47:19 AM  Show Profile  Reply with Quote
how to get a dual polarity supply?? i know this website has one circuit for this here
http://www.aaroncake.net/circuits/supply3.asp

but it takes input from 120v ac supply. can u make one that takes input from a battery??

thnx
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audioguru
Nobel Prize Winner

Canada
4218 Posts
Posted - Aug 03 2010 :  12:11:38 PM  Show Profile  Reply with Quote
Simply use two 9V batteries. One makes +9V and the other makes -9V.

Download Attachment: Steth-switch.PNG
4.55 KB
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surajsun22
Apprentece

India
16 Posts
Posted - Aug 03 2010 :  1:28:28 PM  Show Profile  Reply with Quote
Ok Thnx i'l try it..
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RRITESH KAKKAR
Apprentece

India
23 Posts
Posted - Aug 20 2010 :  02:30:20 AM  Show Profile  Reply with Quote
I have listen for this ht 12 e/d (holtek encoder & decoder ) are used........!
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aravindj36
Apprentice

India
57 Posts
Posted - Jan 05 2011 :  09:06:02 AM  Show Profile  Visit aravindj36's Homepage  Reply with Quote
Pardon me Rritesh, but what do you mean.
Help me my amplifier is on fire and my speaker is inside a beaker
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