| T O P I C R E V I E W |
| aravindj36 |
Posted - Mar 30 2010 : 02:19:51 AM
Hello there, I was looking for circuit of a simple infrared light beam alarm.I dont know anything about microcontrollers .pleading help |
| 15 L A T E S T R E P L I E S (Newest First) |
| aravindj36 |
Posted - May 24 2010 : 01:54:13 AM
ok will this work http://home.cogeco.ca/~rpaisley4/IRProxOscReceiver.GIF and please which one of the 2 circuits are better |
| pebe |
Posted - May 17 2010 : 04:22:24 AM
quote:
Originally posted by aravindj36
Not someone it is the link i had given earlier it starts shreeram electronics
ALL of your links are to websites. None of them refer to a circuit. |
| aravindj36 |
Posted - May 17 2010 : 02:28:08 AM
Not someone it is the link i had given earlier it starts shreeram electronics |
| audioguru |
Posted - May 16 2010 : 09:11:06 AM
Who is Sheeram?
Your links do not work. |
| aravindj36 |
Posted - May 16 2010 : 07:30:16 AM
<a href="http://hyperwebenable.com/?saref=6sa5896"><img src="http://hyperwebenable.com/images/addbanner.gif" alt="Visit this site."></a> |
| aravindj36 |
Posted - May 16 2010 : 07:05:50 AM
OK then from which all pins of the circuit from shreeram give me a continuos signal forget the tx |
| audioguru |
Posted - May 09 2010 : 11:38:32 AM
The link to your schematic does not work. |
| aravindj36 |
Posted - May 09 2010 : 02:25:25 AM
In the given circuit will the input given to pin no 11 be a stable onehttp://www.dsaprojects.110mb.com/electronics/ir/ir-1_sch.gif |
| audioguru |
Posted - May 05 2010 : 6:43:38 PM
An IR receiver IC is made to give an output of varying pulses from the varying pulses from a remote control transmitter. Since you want a non-fluctuating DC output then your receiver circuit must include a mono-stable multivibrator or a flip-flop latch. |
| aravindj36 |
Posted - May 05 2010 : 11:38:10 AM
well then is their any way i can create a continuos non fluctuating pulse from the tsop so that i could configure it as a potential divider and drive a relay |
| audioguru |
Posted - May 04 2010 : 10:21:33 AM
Most circuits from that website in India are very old and do not work or work very poorly.
The IR transmitter does not send bursts of 38kHz pulses so the TSOP IR receiver turns down its gain and then the range is very small. It needs another 555 oscillator to create the bursts. |
| aravindj36 |
Posted - May 04 2010 : 05:31:13 AM
will this work http://www.shreeramindia.com/kits_n_spares/electronics%20projects/Electronic%20Watchdog.htm |
| aravindj36 |
Posted - May 02 2010 : 09:08:33 AM
Well i dont know why .could anyone give me a working cicuit ithink its been too long since the post began.And now i've managed to get an L14F1
phototransistor giving 60Rs (today 1 us$=Rs50).For me thats too much but a tsop1838 costs me just Rs10 |
| audioguru |
Posted - May 01 2010 : 12:50:32 PM
Your new circuit will not work unless you remove the diode.
The 36kHz carrier for the IR pulses must be modulated in "bursts" (explained in the datasheet)for good range.
Why are most circuits posted on the internet WRONG?
|
| pebe |
Posted - May 01 2010 : 07:24:41 AM
Is the symbol marked "100mA" supposed to represent a lamp? |
