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Integrated-Pre-Main-Amplifier SV2000

Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 894468) Ampl/Mixer
 
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 894473) Ampl/Mixer
 
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 894474) Ampl/Mixer
 
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 894477) Ampl/Mixer
 
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 894478) Ampl/Mixer
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 275535) Ampl/Mixer Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 275536) Ampl/Mixer
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 491882) Ampl/Mixer Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 500187) Ampl/Mixer
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 1527129) Ampl/Mixer Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 1527130) Ampl/Mixer
Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 1527131) Ampl/Mixer Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 2112997) Ampl/Mixer
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Integrated-Pre-Main-Amplifier SV2000; Grundig Radio- (ID = 275535) Ampl/Mixer
Grundig Radio-: Integrated-Pre-Main-Amplifier SV2000 [Ampl/Mixer] ID = 275535 900x315
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For model Integrated-Pre-Main-Amplifier SV2000, Grundig (Radio-Vertrieb, RVF, Radiowerke)
 
Country:  Germany
Manufacturer / Brand:  Grundig (Radio-Vertrieb, RVF, Radiowerke)
alternative name
 
Grundig Portugal || Grundig USA / Lextronix
Year: 1981–1984 Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Audio-Amplification
Wave bands - without
Details
Power type and voltage Alternating Current supply (AC) / 110; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 150 W (max.)
from Radiomuseum.org Model: Integrated-Pre-Main-Amplifier SV2000 - Grundig Radio-Vertrieb, RVF,
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 450 x 75 x 350 mm / 17.7 x 3 x 13.8 inch
Notes SlimLine Stereo Vollverstärker mit 2x 50 Watt Sinus an 4 Ohm (DIN).
Net weight (2.2 lb = 1 kg) 9 kg / 19 lb 13.2 oz (19.824 lb)
Source of data -- Original-techn. papers.

Model page created by Peter Böhm. See "Data change" for further contributors.



All listed radios etc. from Grundig (Radio-Vertrieb, RVF, Radiowerke)
Here you find 6079 models, 5301 with images and 4094 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
Grundig Radio-: Integrated-Pre-Main-Amplifier SV2000
Threads: 1 | Posts: 4
Hits: 414     Replies: 3
Grundig Mains transformer type 09068-301.01
Georges Van Campenhout
29.Dec.20
  1

Dear forum members,

Can anyone give me information about this transformer?

All I know is that is has been used in a Grundig CUC color TV chassis.

The secondary has 2 windings: 220 V , fused with a 3.15 A fuse, and 19 V, fused with 4Amp.

The primary is fused with 4 Amp.

I would like to modify it for a secondary voltage of 110 V, by unwinding the 220 V output.

Possibly there are 2 secondary 110 V windings in series, each wound on a leg of the U shaped core?

Attachments

Hans M. Knoll
30.Dec.20
  2

Hallo.

Dieser Plan in der Anlage stammt aus einem von mir entwickelten HiFi –Audioamplifier, dem n  SV2000 von GRUNDIG.

Dort wird auch ein  Zweiwickel - Netztrafo mit Doppel U-kern benutzt.

Im Plan siehst Du wie man sowas von 220Volt aus 110Volt umschalten kannn oder muss, wenn der Amp.  an einem 110Volt Netz laufen soll.

 

Hi there.

This plan below, comes from a hi-fi audio amplifier, I have this developed, the SV2000 from GRUNDIG.

A two-winding power transformer with a double U core is also used there.

In the plan you can see how you can or must switch something from 220Volt to 110Volt if the amp should run on a 110Volt network.

regards h.m. knoll

 

Georges Van Campenhout
02.Jan.21
  3

good afternoon Herr Knoll,

Thank you for your answer.

In the meantime I was able to open the transformer partially, and I succeeded to draw the diagram.

Each leg of the U-shaped core has 2 coils. Both the primary and the secondary are on these 2 coils, but each winding is split in 2 half windings. This allows me to put the 2 secondary half windings  S3 and S4 in parallel, to get a 110 Volts output. This is exactly what I needed.

But one more question: between the two half windings of the primary is a component with zero ohms resistance. I think it is a kind of heat protetion, that open when te coil temperature is too high. I could not visualise it because is is embedden in the windings.

 

Attachments

Hans M. Knoll
03.Jan.21
  4

Hallo  Georges Van Campenhout

Das unbekannte Bauteil, war zu dieser Zeit ein Thermoschalter, (110 bis 135 grad Cels)  

Hello Georges Van Campenhout

The unknown component at that time was a thermal switch, (110 to 135 degrees Cels

h. m. knoll

 
Grundig Radio-: Integrated-Pre-Main-Amplifier SV2000
End of forum contributions about this model

  
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