the input signals produces the sum of the squares and forms the square root from the sum vector calculator as in the case of the circuit shown in fig1 there applies for the angular velocity u03c9 as a function of the angle of rotation u03b1 equ4 with the output signals s 1 and s 2 of the preparation electronics transmitter preparation 2 in accordance with the relationships the angular velocity equ5 is determined by differentiation of s 1 f u03b1 and u03b1 f t with reference to time t we have equ6 the angular velocity is to be determined in accordance with the following equation equ7 at the output of the circuit 13 we thus have the value equ9 i e the amount of the angular velocity y available since by the pictorial addition of the vector components the directional information is lost fig3 shows an analog operating circuit arrangement for the determination of a variable which is proportional to the angular velocity the output voltages v s1 t v 0 sin u03b1 and v s2 t v 0 cos u03b1 of the angle transmitter 1 and of the preparation electronics 2 are fed via respective operational amplifiers 14 15.