I have 3 pieces of older test equipment that use 1.345v mercury batteries.
I believe they are either used as reference voltages, or one unit uses 2 batteries (for +1.345v) and might be used in a dc bridge (for a null detector unit).
I have found these two things...
1)....For cameras, there is a "silver oxide" 1.55v battery and a zinc disc or other adapter, to mimic the mercury's steady 1.345v.
http://www.cameracheckpoint.com.au/html/mercury_battery.html
2)....Using any battery of a higher voltage, then regulating them to 1.345v.
http://www.techlib.com/electronics/mercury.htm
I'm not sure if a "voltage reference" chip would work.....the closest voltages are 1.2v, or there's a 1.2875v.
(I suspect in the bridge circuit, that the 1.55v silver oxide's might work straight-away, because they're just there to achieve a null, anyway.)
=FB=
I believe they are either used as reference voltages, or one unit uses 2 batteries (for +1.345v) and might be used in a dc bridge (for a null detector unit).
I have found these two things...
1)....For cameras, there is a "silver oxide" 1.55v battery and a zinc disc or other adapter, to mimic the mercury's steady 1.345v.
http://www.cameracheckpoint.com.au/html/mercury_battery.html
2)....Using any battery of a higher voltage, then regulating them to 1.345v.
http://www.techlib.com/electronics/mercury.htm
I'm not sure if a "voltage reference" chip would work.....the closest voltages are 1.2v, or there's a 1.2875v.
(I suspect in the bridge circuit, that the 1.55v silver oxide's might work straight-away, because they're just there to achieve a null, anyway.)
=FB=