Testing a TSOP1738


Joined Jan 28, 2005
Hi could any one help me to test the tsop1738 is good or not........?
Greetings rvm.karthi.

Posting your question on more than one forum is a perfectly good way to cross check suggested solutions. It also gives you a larger audience for your specific problem since others may have your same problem and can benefit from the suggestions provided.


Thread Starter


Joined Dec 29, 2009
That circuit is simple, 100 Ohm serious with input 5vdc and 10k parallel with i/p and o/p then 4.7 microfarad with i/p and ground....


Joined Apr 5, 2008

That is said in the FAQ:

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Joined Dec 20, 2007
A bitmap uses very many digital bytes. Convert it to a PNG file type that uses few bytes and is very clear. Use Microsoft Paint program to convert it.


Joined Dec 20, 2007
The datasheet for the TSOP1738 shows that its output goes low (with a fairly low amount of current drive) when it receives IR bursts of 38kHz. Without a modulated IR input it output is normally high like yours has.