9 votes
Accepted

Unexpected behavior when using 5V from one power supply and Ground from another one

Can anyone explain this behavior to me? Ground on one charger does not necessarily mean it connects to ground on another charger or "system". Ground is not "earth" so there is ...
Andy aka's user avatar
  • 458k
8 votes
Accepted

What part is used in this IR receiver?

You will want to investigate the following web page at Vishay. http://www.vishay.com/ir-receiver-modules/repeater/ At that page there is a section that links you to IR Receivers that are designed ...
Michael Karas's user avatar
3 votes

Unstable IR receiver performance

Supply current isn't something you can (or even need) to guarantee. You supply the device with a supply voltage with in the allowed range (up to 6V for the TSOP34438.) It will then draw as much ...
JRE's user avatar
  • 71.4k
3 votes
Accepted

Are IR emitter frequencies adjustable? Can modulation of the emitter vary material absorption properties?

A common LED emitter, gallium arsenide, apparently has a frequency of about 760 nm. Figure 1. 760 nm is off the end of the visible red range. OK so far. Then on the receiving end, there is a ...
Transistor's user avatar
  • 176k
2 votes

IR receiver output pulsating instead of constant one('5V') or zero ('0V')

There are several problem here. These TSOP receivers and similar ones from other companies, are not intended to detect a steady carrier. They are highly tuned to a specific carrier frequency, and ...
Olin Lathrop's user avatar
2 votes
Accepted

IR receiver output pulsating instead of constant one('5V') or zero ('0V')

If the LED blinks on and off when the bottles interrupt the IR beam, then that means that there are spaces between the bottles on the belt and although your circuit may seem to be working, the ...
EM Fields's user avatar
  • 17.5k
1 vote

Is there any dedicated IR receiver IC with atleast 5 output pins

There is such a wide range of needs for IR remote control that there are very few or probably zero devices that receive and decode IR remote control signals. You will need to do it with a ...
Kevin White's user avatar
  • 33.2k
1 vote
Accepted

How to send this signal to a mixer?

Jom, this is an excellent opportunity to learn troubleshooting skills. When troubleshooting, you work your way through step-by-step, considering possibilities and gathering data to rule them out or in....
Mark Leavitt's user avatar
  • 5,664
1 vote

Innitially turn off device with relay, Arduino and IR remote

Add this code within void Setup() function after initializing all pinMode(). ...
Prayuktibid's user avatar
1 vote

Are IR emitter frequencies adjustable? Can modulation of the emitter vary material absorption properties?

The wavelength of 760nm of the LED cannot be changed without replacing it with another one. The modulation you speak of is the act of turning the LED on and off rapidly. One way is to use segments of ...
vini_i's user avatar
  • 7,108
1 vote

Using TSOP17XX IR Receiver with IR LED

The TSOP17 datasheet I found has a graph which shows it's peak IR sensitivity is around 940nm. So use an IR LED which emits within, say, +/-50nm of that. The transmitted signal must be modulated at ...
gbulmer's user avatar
  • 10.1k
1 vote

multiplex multiple photodiodes to one transimpedance amp

Try a four channel tia like ltc6560.
Ibo Tatli's user avatar
1 vote

multiplex multiple photodiodes to one transimpedance amp

1) In the case of a photodiode with very low current output, the effect of the 60ohms series resistance of the HC4051 multiplexer will be negligible. 2) A long distance between the photodiode and ...
Neil_UK's user avatar
  • 167k
1 vote
Accepted

High bitrate IR receiver (TSOP7000 replacement)

For obvious reason I can't use IrDA because of complicated protocols which are big overhead to latency. Of course you can use an IrDA receiver. All it does is handle the physical layer, this means ...
bobflux's user avatar
  • 77.6k

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