DE1972055U - VOTING DEVICE FOR OPTIONAL UHF AND VHF RANGES, IN PARTICULAR TO TUNE TELEVISION RECEIVERS. - Google Patents

Description

.Α.502 8Ί5 * 3ί.8.67

r, W. Bierre

6 Frankfurt / Main

Tel. 55 84 81

PoBtf. 11051

USED MJSTY

Applicant: SABA Schwarzwälder Apparate-Bau-Anstalt August Schwer Sons G.m.b.H.

7illingen (Black)

Designation: voting unit for optional

UHi ¹ and YHF areas, especially for tuning television receivers.

The subject of protection concerns a voting unit for channel selector in UHF or VHF areas, as they are usually especially in Televisions are used.

The VHF travel arrangements are known for this separated from the UHF adjustment elements, which generally consist of several circular cup chambers provided, so the YHF part is also housed in a separate chamber. The disadvantage here is the particular space required, which means that the voting unit as a whole is unnecessary is built up enlarged.

There are tuning units for television receivers known j where a board is arranged outside of circular cup chambers, i.e. as part of their Outer walls formed, or is placed at a distance from them (DGM-I, 899, 851), only to the purpose of UHF channel selectors so far inside Sehaltungsteile arranged by pot circle chambers for the DC power supply for the operation of transistors to be placed on the outside the transistors

itself too, so that pot circles are connected separately

respectively can be coordinated, as previous assembly these circuit parts inside led to difficulties in their arrangement, so that for the circle votes then scattering or damping effects disruptive could occur.

Next, it is again only for U Hi ¹ - Q} uner known only to _s for several adjacently arranged cavity resonators, in addition to a CBX the TopfkammerB. Closing circuit board inside, as a third structural unit, a removable wall panel to be used as the outer closure of the chamber, which in turn has partition wall parts at an angle to complement the inner pot chamber partition walls. This removable side wall also serves as a carrier for switching elements, such as a dual frequency filter Here, too, it is only a question of a chamber circle composed of several assemblies only for the UH]? area. CDHP-I, 186,525).

On the other hand, it is the task of the subject-matter of protection

such voting arrangements from Topfkamtpcreisen for Combine various TIHE and VHF areas at the same time in the smallest of spaces, and with simplification the assembly work also their electrical adjustment easier to implement.

The subject of protection is characterized by the fact that a laminated circuit board with all switching elements for the VHF areas together with the area switch optionally for JJKff / TSE circles is to be inserted uniformly into a cutout of the UEF chamber housing that runs transversely through all of the circular cup chambers the circuits, primarily in printed I-standard on the circuit board with associated switching elements for the VSF areas in the UHB ¹ -! pot circle chambers mil? included, so that their structural unit is not enlarged, but spatially fully utilized. Previously disadvantageous separate chamber arrangements for VHP tuners

omitted because of this. beautiful aligned within a common cut-out for all UHF chambers to combine to form a structural unit are »Such preassembled YHF modules can be completely electrically balanced using adapters Werdenj so that these VHF modules are then matched or matched anyway in the UHF pot circles. Work together amplifier parts.

In an expedient further development of the protective object, instead of the board equipped for VHF areas, a bare metal plate can supplement the circular cup chambers in the cutout of the housing wall to form an operational UHF unit. In this way, when the VHF circuit board is replaced by a correspondingly large metal strip, the cup circle wall is accordingly closed as a unit by being inserted into the cutouts running across all cup circle chambers ₅ and a cup circle unit is created solely for UHF areas.

The essence of the protective object is based on an embodiment of the tuning device for UHF / VHF areas combined in one housing unit at the same time.

In the figure, 1 denotes the common housing, in which ^{the usual cup circle inner conductors are indicated with I 1,} for example three chambers formed by partition walls 1 "are present, which cup circles are usually used for UHF areas. Running across these three cup circle chambers is a cutout 2 provided which a laminated circuit board 3 with all switching elements 4, 5, 6 for the VHF areas together with the range switch 7? - optionally provided for UHF or VHF areas, can be used, so that a UHF / VHF unit arises within a single housing, namely within the already existing cup-circle housing unit. The board 3 is on its in the interior

of the housing 1 facing side is copper-clad, so that good housing contact is ensured in particular on the bearing surfaces of the cutout 2 in the framework of the housing walls for the cup circles. In this copper-clad surface of the circuit board J, the circuits of the VHIF circles are expediently applied in printed technology, whereby the circuit inductances can also be printed. The oscillating circuit elements 4 and 6 indicated on the laminated side of the circuit board 3 protrude after the circuit board 3 has been inserted into the housing cut-out 2 into the three circular cup chambers, while the switch arrangement ^{7 provided for switching to different UEF / VHi 1} areas reaches outward, as can other high-frequency non-critical parts 5 outside.

If, on the other hand, only UHi ¹ cup circles are required in terms of circuitry, then new circuitry can be made in accordance with circuit board part 3, which is designed for VHJ areas

»Be taken out _? and in its place © a bare one

Be inserted into the metal plate, which then

* circular wall supplemented electrically accordingly

On the board 3, openings 8 are finally shown through which VHF circles if necessary can be re-tuned, which see as Circular units fully balanced by means of adapter arrangements Circles could also be aligned through these openings 8 from the outside are only approximate preliminary adjustments received for installation.

Note: This document (description BfH =! <- Ss! 5 «feesspr.) Is submitted to the zuefzf«; it differs from the word version of the originally submitted Uriieriogen. The legal significance of the deviation has not been checked. Documents submitted for Qte urapröngfioh are located sk-h in d-sn arrils files. You can see proof of legal interest at any time free of charge. On request, photocopies or film negatives can also be supplied at the usual prices. Peuf's patent office, utility model office.

Protection claims,

Claims (3)

502 845 * 8/31/67 protection claims, 1. Tuning device for UHF and VHF areas, optionally combined with several cup circles arranged next to each other in a housing and one
designed as a circuit board with printed circuit, removable cup circle part wall, in particular for
Television receiver, characterized in that one
Laminated circuit board (3) with all retaining elements (4,5j6) for the VHF areas together with the area switch (7) optionally for UHF / VHF circles, in a cutout (2) of the UHF housing that runs transversely through all overhead circular chambers ( l) is to be inserted uniformly. 2 ο tuning device according to claim 1, characterized marked t that instead of the board (5) equipped for VEEF circles, a bare metal plate is used for the pot circle chambers in the cutout (2) of the housing wall added to an operational UHF unit alone. 3. Tuning device according to claim 1, characterized in that that the inductances of the VHF circuits in printed circuit technology on the board (3) are upset » 4 ·. Tuning device according to Claim 1, characterized in that that only pre-adjusted VHF units after inserting the board (3) from the outside Openings (8) are to be readjusted through.