Direct current supply particularly for cathode ray tube

A direct current supply of the voltage multiplier type comprising:

• a plurality 2 n of capacitors and a plurality 2 n of rectifiers for supplying n cascade-connected voltage doubler stages and a first d.c. voltage whose value is substantially equal to 2 n times the peak value of an a.c. voltage applied to the input;
• means for the regulation and control of the first voltage produced between the output terminal of the final stage and a terminal connected to the reference potential;
• and
• at least one generator circuit for generating a second stabilized d.c. voltage formed from a first capacitor connected by a first end to the connecting point of the two rectifiers of a doubler stage and by its second end respectively to the input of a first rectifier and to the output of a second rectifier, said first capacitor being formed by an adjustable capacitor for varying the current provided from said connection point and therefore said second voltage, said first and second rectifiers being connected by their other end to the reference potential, said connection being in the case of one of them across a resistor connected in parallel with a second capacitor, the second voltage being taken at the terminals of the second capacitor.