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EF12 K Telefunken Röhre Tube VALVOLA AD1 EL EM ECC
End: 07.01. 2024 15:48:52 on Sunday
- Condition: Used
- Price: 24.9 EUR
- Status: unsold
- Item number: 355335652054
- Bids: 0
- Seller: vintagezeit (32|100.0%)
- Seller information: non commercial
- Item location: Bischofsheim
- Ships to: EuropeanUnion
- Shipping: 0,0 EUR
- on EBAY
4x EF13 Telefunken Wehrmacht RFT Röhre Tube AD1 EL EM ECC Valvola
End: 07.01. 2024 15:48:21 on Sunday
- Condition: Used
- Price: 29.9 EUR
- Status: unsold
- Item number: 355335651344
- Bids: 0
- Seller: vintagezeit (32|100.0%)
- Seller information: non commercial
- Item location: Bischofsheim
- Ships to: EuropeanUnion
- Shipping: 0,0 EUR
- on EBAY
5x Valvo AZ1 Röhre Tube geprüft Gleichrichter Rectifier (AD1 EL34 EL156 RE604)
End: 07.01. 2024 15:48:13 on Sunday
- Condition: Used
- Price: 39.9 EUR
- Status: unsold
- Item number: 355335651041
- Bids: 0
- Seller: vintagezeit (32|100.0%)
- Seller information: non commercial
- Item location: Bischofsheim
- Ships to: EuropeanUnion
- Shipping: 0,0 EUR
- on EBAY
3x EF11 Telefunken Röhre Tube Valvola AD1 EL EM ECC
End: 07.01. 2024 15:47:37 on Sunday
- Condition: Used
- Price: 24.9 EUR
- Status: unsold
- Item number: 355335648828
- Bids: 0
- Seller: vintagezeit (32|100.0%)
- Seller information: non commercial
- Item location: Bischofsheim
- Ships to: EuropeanUnion
- Shipping: 0,0 EUR
- on EBAY
Rare Philips Miniwatt AD1 Röhre/tube getestet auf Funke W19 "gut" 46mA
End: 04.01. 2024 15:40:55 on Thursday
- Condition: Used
- Price: 239.0 EUR
- Status: sold
- Item number: 266557393815
- Seller: el503 (1372|100.0%)
- Seller information: non commercial
- Item location: Köln
- Ships to: EuropeanUnion
- Shipping: 5,49 EUR
- on EBAY
PL509 Telefunken Röhre Tube Valvola Vacuum Endstufe EL 509 34 AD1
End: 24.12. 2023 16:09:24 on Sunday
AL4 Telefunken Röhre Tube Valvola Gleichrichter Rectifier Pentode AD1
End: 24.12. 2023 16:09:11 on Sunday
Valvo PL5684 C3JA Ste5684 Röhre Tube Valvola Motor Control AD1
End: 24.12. 2023 16:08:59 on Sunday
PL509 CİFTE Röhre Tube Valvola Vacuum Endstufe EL509 EL34 AD1
End: 24.12. 2023 16:08:51 on Sunday
4x EF13 Telefunken Wehrmacht RFT Röhre Tube AD1 EL EM ECC Valvola
End: 24.12. 2023 15:47:44 on Sunday
EF12 K Telefunken Röhre Tube VALVOLA AD1 EL EM ECC
End: 24.12. 2023 15:47:41 on Sunday
5x Valvo AZ1 Röhre Tube geprüft Gleichrichter Rectifier (AD1 EL34 EL156 RE604)
End: 24.12. 2023 15:47:11 on Sunday
5x EF11 Erfurt Funkwerk RFT Röhre Tube Valvola AD1 EL EM ECC
End: 24.12. 2023 15:46:59 on Sunday
3x EF11 Telefunken Röhre Tube Valvola AD1 EL EM ECC
End: 24.12. 2023 15:46:46 on Sunday
PAIR TUBES RS242 black Telefunken TFK matched curves with Sofia NOS AD1 WE
End: 18.12. 2023 15:55:04 on Monday
- Condition: Used
- Price: 900.0 EUR
- Status: unsold
- Item number: 186141126041
- Seller: brucknerhorn (165|100.0%)
- Seller information: Commercial (with base shop)
- Item location: Bologna
- Ships to: Worldwide
- Shipping: 13,0 EUR
- on EBAY
-
Description
In the last century I bought a few thousand tubes and tested them with the computerized curve tracer Sofia by Audiomatica. The tubes I purchased were mostly direct heated triodes ( DHT ) and high transconductance noval. Over time I have kept only the most linear tubes and matched them. In the coming weeks a part of my collection will be on sale (among these DHTs such as UX201A, CX301A, 171A, 112A, CV1660, 3A/110A, AC/P4, 801A, 10Y, 801 RCA ceramic base, RE604 TFK globe, RE084, RE134, D3A Siemens, etc )If you need information on the interpretation of the curves or enlargements of specific areas, just ask.It should be noted that Sofias software makes an error when measuring direct heated tubes.The cathode reference point is lifted up by half of the heater voltage; so, for example, when the filament is fed at 4 volts, all curves are actually measured at 2 volts less than nominal. The curve you see at -40 volts is actually at -42 volts. The higher the voltage of the filament, the greater the difference (especially with the family of 10Y/VT25/VT62/801A etc with a 7.5 volt filament the error is 3.75 volts) You can read about it on the dedicated page in Sofia by Audiomatica on the Jac music website. Auction for one matched pair of RS242 black plate Telefunken NOS only tested Full emission, same construction The two tubes were manufactured in the january 1942 with the number 218001 and in the february 1942 with the number 218767 Both with the black plates; the grey plates were manufactured in the two last years war and generally, from my experience, have much less quality You see the curves of each triode and the third image with the curves overlapped For any infos and for combined shipping, please ask. For shipping outside Europe, please ask for better prices
AL4 Telefunken Röhre Tube Valvola Gleichrichter Rectifier Pentode AD1
End: 17.12. 2023 16:08:35 on Sunday
PL509 Telefunken Röhre Tube Valvola Vacuum Endstufe EL 509 34 AD1
End: 17.12. 2023 16:08:35 on Sunday
Valvo PL5684 C3JA Ste5684 Röhre Tube Valvola Motor Control AD1
End: 17.12. 2023 16:08:35 on Sunday
PL509 CİFTE Röhre Tube Valvola Vacuum Endstufe EL509 EL34 AD1
End: 17.12. 2023 16:08:35 on Sunday
PL509 Telefunken Röhre Tube Valvola Vacuum Endstufe EL 509 34 AD1
End: 10.12. 2023 15:50:01 on Sunday
Valvo PL5684 C3JA Ste5684 Röhre Tube Valvola Motor Control AD1
End: 10.12. 2023 15:50:01 on Sunday
PL509 CİFTE Röhre Tube Valvola Vacuum Endstufe EL509 EL34 AD1
End: 10.12. 2023 15:50:01 on Sunday
AL4 Telefunken Röhre Tube Valvola Gleichrichter Rectifier Pentode AD1
End: 10.12. 2023 15:50:01 on Sunday
4x EF13 Telefunken Wehrmacht RFT Röhre Tube AD1 EL EM ECC Valvola
End: 10.12. 2023 15:46:15 on Sunday
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