Crt Clock Schematic -

The beam traces the outline of the digits. Algorithm:

$$ D = \fracL \cdot V_d2 \cdot d \cdot V_a $$ Where ( D ) is deflection (mm), ( L ) is plate length, ( d ) is plate gap, ( V_d ) is deflection voltage, and ( V_a ) is anode voltage. Crt Clock Schematic