Hi I realise that this thread is a bit old, but on the 25June 2011 post no 28 Eric Gibbs posted a circuit, and I want to know if I need permission to use it? If I have permission to use the circuit I will post mine for your comments and advice.
Hi I realise that this thread is a bit old, but on the 25June 2011 post no 28 Eric Gibbs posted a circuit, and I want to know if I need permission to use it? If I have permission to use the circuit I will post mine for your comments and advice.
Hi Eric
I think the circuit is a break beam. It is in connection with another post I did about a bathroom mirror IR failure. How do I switch on the SSR?
Hi Eric
I think the circuit is a break beam. It is in connection with another post I did about a bathroom mirror IR failure. How do I switch on the SSR?
hi,
I have read thru the other thread, I see that when you pass/place your hand in front of the sensor the light is activated.? is that correct.?
If yes, then I suspect that the IR emitter is pulsing at say 38KHz ??? , so when you place a reflective surface [ your hand] the IR pulses are reflected back into the IR detector.
Its also possible the original circuit works with the emitter in a continuous mode, ie DC drive, the detector senses the illumination level of the IR signal.
So under normal conditions, ie: no reflected IR , the detector will not have an output.
I would say the circuit you have posted will not give the result you expect.
Hi Eric
Thanks for your advice. Yes when you place your hand in front of the sensor the light is activated. I have spent a lot of time on line trying to find a circuit so I can make a pcb to replace the original unit. Not very happy with a transformerless unit. Perhaps you can point me in the right direction.
Hi Eric
Thanks for your advice. Yes when you place your hand in front of the sensor the light is activated. I have spent a lot of time on line trying to find a circuit so I can make a pcb to replace the original unit. Not very happy with a transformerless unit. Perhaps you can point me in the right direction.
Hi Eric
Thanks for the circuit. I take it that it uses a photo-diode for sensing, could I still use the OPB702, if not what photo-diode would you recommend? Would a C106D Thyristor be suitable to use in this circuit for the SCR? In the circuit it has LIGHT R11 1000 is this the load (1000W).
Hi Eric
Thanks for the circuit. I take it that it uses a photo-diode for sensing, could I still use the OPB702, if not what photo-diode would you recommend? Would a C106D Thyristor be suitable to use in this circuit for the SCR? In the circuit it has LIGHT R11 1000 is this the load (1000W).
Hi Eric
I have a Multi meter ( not the £5 type ) ,ISO-TECH ICT76 meter and a PicoScope 2202. However I have no idea how to use the scope yet, I will have to look for a tutorial. I fully understand the safety implications regarding mains electricty, that is one of the reasons for new circuit with a transformer.