DE467200C - Electrical resistance - Google Patents

Description

Pa ten τ λ NSi ¹ Ru CHE:

ι. Electrical resistance, characterized that an H-shaped layer of conductive material is applied to a flexible insulating base, their vertical legs with flexible conductive ones that are used to supply and discharge electricity Stripes are occupied.

2. Electrical resistor according to claim i, characterized in that the Flexible insulating pad together with the sheet metal strips on a cylindrical tube Insulator is rolled.

*) The patent seeker stated as the inventor:

Henricus Adrianus Broos in Eindhoven, Holland.

1 sheet of drawings

BERLIN. PRINTED IN THE REICH PRINTING COMPANY

Claims (1)

The invention relates to an electrical resistor of very simple form, the corresponds well to its purpose and can be produced easily and cheaply. At this The form of the resistor is applied to a flexible insulating pad Line made of conductive material effective as a resistive part. It is already known to use a pencil or graphite line for the same purpose. The great difficulty that arises is to establish good contact between the Get the ends of this dash and the ends of the power conductors. Where reliable contacts are required, so that the pencil line acting as a constant resistance, it is desirable to have means of achieving such Find contacts. According to the invention, a very reliable ao loose contact between the resistance line and the conductors. Of the Resistance coating is applied to a flexible insulating pad of suitable thickness and is considerably widened at the ends as well as having flexible conductive, for Power supply and discharge serving small strips covered. The flexible insulating pad through a paper strip and the flexible conductive Parts formed by small tinfoil strips. On the paper is, z. B. with Indian ink, an H-shaped figure is applied, its horizontal connecting line as a resistance line is effective. The dimensions of this line determine the size of the resistor. There are small ones on the vertical legs flexible conductive strips, suitably tinfoil strips, applied, the wider and longer than the vertical legs of the · H are. The paper strip and the small tinfoil strips are together around a cylindrical one Isolator, e.g. B. a glass rod, rolled, whereupon the tinfoil strips turned over to the outside and provided with lead wires, the ends of which are helical Place tightly around the tinfoil parts. The whole thing can be put into a paraffin bath in a small sleeve made of insulating material can be inserted, and the sleeve can with Pin or blade contacts are provided that come into contact with the lead wires stand. The resistor according to the invention is particularly suitable for use as a so-called Lattice resistance in wireless telephony receivers. On the flexible insulating pad according to Fig. 1, z. B. by means of Indian ink, an H-shaped figure 2 shown in Fig. 2 is applied. The vertical legs of the H are covered with small sheet metal strips 4 (Fig. 3) and these are bent around the long sides of the flexible base, whereupon the latter is rolled together with the small sheet metal strips onto a cylindrical insulator. The lead wires 5 and. 6, as shown in Fig. 4, are wound around the sheet metal coverings of the resistor in the form of a screw. If the resistance of the horizontal part of the H-shaped figure is too great should be, an additional pencil line 3 (Fig. 3) can be made on this part acting as a resistor connected in parallel. The resistor according to Fig. 4 is placed in a paraffin bath and then in a small can Introduced from insulating material. The wires 5 and 6 are with pin or blade contacts conductively connected, which in turn are connected to the insulating sleeve.