G
garyr
- Jan 1, 1970
- 0
I'm using a latching relay to switch between two gain-setting resistors for
an instrumentation amplifier (INA128). There are two such amplifiers on my
board, hence two relays. I would like to connect the set and reset coils
of both relays in parallel and switch both at the same time. Latching
relay guidelines I found on the Panasonic site states that if the coils in
two latching relays are connected in parallel, there should be a diode in
series with each. It doesn't say why this is necessary and the diagram that
illustrates this doesn't show any snubbers in parallel with the coils. Would
the series diodes be necessary if snubber diodes were connected in parallel
with each coil?
an instrumentation amplifier (INA128). There are two such amplifiers on my
board, hence two relays. I would like to connect the set and reset coils
of both relays in parallel and switch both at the same time. Latching
relay guidelines I found on the Panasonic site states that if the coils in
two latching relays are connected in parallel, there should be a diode in
series with each. It doesn't say why this is necessary and the diagram that
illustrates this doesn't show any snubbers in parallel with the coils. Would
the series diodes be necessary if snubber diodes were connected in parallel
with each coil?