AD410 DC connection polarity
AD410 DC connection polarity
The AD410 tech specs include 12-24 Vdc for power. However there is no polarity marked or documented. Which terminal is positive or is it self sensing and not matter? I called tech support but the English was so poor I couldn't understand them.
Re: AD410 DC connection polarity
Hello and Welcome to the Forum..
So in some of my Older Dual Voltage cameras your right they are marked on what would be + and what would be - if using DC. However with the AD410 and AD110 it is Dual Voltage that isn't dependent on polarity.
Here is what is important. If your going to use a Doorbell Chime then Chime Kit is needed. IF no Chime then you don't need a Chime Kit and you can run AC Or DC. If Doorbell Chime then you will need to run Chime Kit and 16vac 30va..
So in some of my Older Dual Voltage cameras your right they are marked on what would be + and what would be - if using DC. However with the AD410 and AD110 it is Dual Voltage that isn't dependent on polarity.
Here is what is important. If your going to use a Doorbell Chime then Chime Kit is needed. IF no Chime then you don't need a Chime Kit and you can run AC Or DC. If Doorbell Chime then you will need to run Chime Kit and 16vac 30va..
Be Safe.
Re: AD410 DC connection polarity
I thought I would touch some more on this..
The Camera is normally a AC. This means that the camera is going to have a Bridge Rectifier and because of this the camera don't need to worry about Polarity marked. What happens is the Bridge knows what needs to be + and - and will only give such to the cameras internal circuit.
I have not looked at any of my older cameras for long time but if I had to guess they might have only used a Single Diode to change the internal voltage to the DC that the camera would need. Today using a Full Bridge that makes it so no need for marked Polarity. I did just to confirm change out the Polarity on my AD410 and it is still working as it was before the change. I have my AD410 working without a Indoor Chime and powered with a 12v DC power supply
However doing this normally the Voltage Drop would be little over 1v however I have not tested this but normally because of the Full Bridge Rectifier there will be a voltage drop
Crude fast drawing of a Bridge Rectifier
The Camera is normally a AC. This means that the camera is going to have a Bridge Rectifier and because of this the camera don't need to worry about Polarity marked. What happens is the Bridge knows what needs to be + and - and will only give such to the cameras internal circuit.
I have not looked at any of my older cameras for long time but if I had to guess they might have only used a Single Diode to change the internal voltage to the DC that the camera would need. Today using a Full Bridge that makes it so no need for marked Polarity. I did just to confirm change out the Polarity on my AD410 and it is still working as it was before the change. I have my AD410 working without a Indoor Chime and powered with a 12v DC power supply
However doing this normally the Voltage Drop would be little over 1v however I have not tested this but normally because of the Full Bridge Rectifier there will be a voltage drop
Crude fast drawing of a Bridge Rectifier
- 20220902_202428.jpg (1.49 MiB) Viewed 1100 times
Be Safe.
Re: AD410 DC connection polarity
Also to show what they look like in hardware I made a fast one 4 diodes and a real one the the right if you zoom in to picture you can see the + and - of the real one pulled from a device
- 20220902_203208.jpg (1.38 MiB) Viewed 1099 times
Be Safe.