Hello,
This is my first post to the forum. I have very limited knowledge of circuits but have no problem in building circuits even if I don't understand them fully.
First some background. I'm in the process of installing a home automation as I renovate my house.
One of the 'Modules' that I am using is able to switch up to 8 devices / relays. See attached PDF ODO002_DS
I've been in discussion with the makers who have advised me to use a 1K resistor instead of the 4K7 one shown in the diagram as the relay coils I want to use are rated at 75mA. I have produced a schematic (my first ever one) which is basically the same as the sample one shown in their PDF with the addition of another resistor which through my research seems to be the done thing.
What I'm trying to achieve is to add an LED into the circuit to indicate when the relay is switched on but I'm not sure where in the circuit to add it. I did think of replacing the diode with the LED but that wouldn't then stop the back current when the relay is de-energised as the LED would have to go the other way around.
Any advice would be appreciated.
Thank you.
- Neil
This is my first post to the forum. I have very limited knowledge of circuits but have no problem in building circuits even if I don't understand them fully.
First some background. I'm in the process of installing a home automation as I renovate my house.
One of the 'Modules' that I am using is able to switch up to 8 devices / relays. See attached PDF ODO002_DS
I've been in discussion with the makers who have advised me to use a 1K resistor instead of the 4K7 one shown in the diagram as the relay coils I want to use are rated at 75mA. I have produced a schematic (my first ever one) which is basically the same as the sample one shown in their PDF with the addition of another resistor which through my research seems to be the done thing.
What I'm trying to achieve is to add an LED into the circuit to indicate when the relay is switched on but I'm not sure where in the circuit to add it. I did think of replacing the diode with the LED but that wouldn't then stop the back current when the relay is de-energised as the LED would have to go the other way around.
Any advice would be appreciated.
Thank you.
- Neil
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