Zedman
Full Member level 6
Hi all,
I have this bridge working with a 1 coil bistable relay, but for monetary reasons I have to use 2 coil relays involving minimal modifications on the current PCBs.
This bridge normaly puts 12V on both of relay's contacts and when Relay_1 or Relay_2 input gets high than the corresponding coil side gets pulled down to GND.
I tought I could use this feature of the bridge to pull down the sides of a 2 coil relay to GND while the common of the 2 coil is tied to 12V.
It works fine, but when no input provided I can measure around 3V on both of the coils. (between point A or B and 12V)
Why is this?
I have this bridge working with a 1 coil bistable relay, but for monetary reasons I have to use 2 coil relays involving minimal modifications on the current PCBs.
This bridge normaly puts 12V on both of relay's contacts and when Relay_1 or Relay_2 input gets high than the corresponding coil side gets pulled down to GND.
I tought I could use this feature of the bridge to pull down the sides of a 2 coil relay to GND while the common of the 2 coil is tied to 12V.
It works fine, but when no input provided I can measure around 3V on both of the coils. (between point A or B and 12V)
Why is this?