Hi all,
New here, I've done a search for this being covered but I'm afraid I'm a bit of a numpty when it comes to electronics, so may well be looking for the wrong thing! Basically, I found a schematic for a trigger on the web, that uses a IR emitter and receiver, which when the beam is broken triggers an output from an SCR.
Only problem is, that I want to use the circuit with a sensor I already have, which doesn't allow me to build the circuit "as is" - so I was hoping that someone could help recreate the circuit based around my sensor cable.
This is the circuit I found:
which has the description: "The circuit shown uses an infrared emitter (XC-880-A) and detector (TIL414). A 2N2222 transistor acts as a switch in the gate-cathode path of an SCR. A sensitive-gate SCR is used. (See Footnote 3.) The SCR is connected either to the terminals of a flash unit or to a delay unit (to be described later). As long as the phototransistor is illuminated by the LED, the collector-emitter path of the 2N2222 is open. When the light is blocked, the voltage across the phototransistor rises and the 2N2222 conducts, thereby gating the SCR."
The sensor I already have looks like this:
The +ve -ve and signal being connected to a 3.5mm stereo jack.
So... can anyone redesign the circuit for me, so that I can just plug my current sensor into it please? If you want to use language fit for an idiot feel free, I make no bones about the fact that whilst I can solder, make PCB's and recognise most of the symbols, I don't really have a clue WHY most of the components are used!!!
Many Thanks.
New here, I've done a search for this being covered but I'm afraid I'm a bit of a numpty when it comes to electronics, so may well be looking for the wrong thing! Basically, I found a schematic for a trigger on the web, that uses a IR emitter and receiver, which when the beam is broken triggers an output from an SCR.
Only problem is, that I want to use the circuit with a sensor I already have, which doesn't allow me to build the circuit "as is" - so I was hoping that someone could help recreate the circuit based around my sensor cable.
This is the circuit I found:
which has the description: "The circuit shown uses an infrared emitter (XC-880-A) and detector (TIL414). A 2N2222 transistor acts as a switch in the gate-cathode path of an SCR. A sensitive-gate SCR is used. (See Footnote 3.) The SCR is connected either to the terminals of a flash unit or to a delay unit (to be described later). As long as the phototransistor is illuminated by the LED, the collector-emitter path of the 2N2222 is open. When the light is blocked, the voltage across the phototransistor rises and the 2N2222 conducts, thereby gating the SCR."
The sensor I already have looks like this:
The +ve -ve and signal being connected to a 3.5mm stereo jack.
So... can anyone redesign the circuit for me, so that I can just plug my current sensor into it please? If you want to use language fit for an idiot feel free, I make no bones about the fact that whilst I can solder, make PCB's and recognise most of the symbols, I don't really have a clue WHY most of the components are used!!!
Many Thanks.