Opening a Leica-METER MC (28)

Metrawatt Leica-METER MC.

 

Here a drawing of the electrical circuitry.

 

Not 100% accurate because i should have drawn variable current sources instead of the variable voltage sources but i find that the voltage source symbol makes for easier understanding.

 

Also the connection of the optional Booster Cell is pictured.

 

The meters Selenium cell has indeed 1 positive pole and 2 negative poles. So when in dark situations a second part of the Cell can be activated by a switch.

 

Color codes :

BK = Black

BN = Brown

GN = Green

RD = Red

YE = Yellow

 

Update 01-June-2012 : DC Resistance of the Coil about 2900 Ohm

 

Done