Model: Pre Amplifier 122
Antique radios, Old Time Radios
Pre Amplifier 122
Country:
United States of America (USA)
Manufacturer/Brand:
Tektronix, Portland, Oregon
Year: 1950
Type:
Alle Arten von Geräten, die eine Radiowerkstatt im weitesten Sinne umfassen kann - sofern es der Hauptzweck des Apprates bzw. Modelles ist.Service- or Lab Equipment
Mod.-ID = 161118
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Principle
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Nous navon pas eu la chance de poser plus des dates.
Uns fehlt die Information. Bitte benutzen Sie das Kontaktformular, wenn Sie uns Daten senden können. Danke. not available; none
Power type and voltage
Diverse: Various kinds of supply OR (seldom) AC/DC but Voltages were not known.
Differentes sortes d`alimentation OU courant alternatif et courant directe mais la tension n`etait pas connu.
Diverse Speisungsarten ODER GW-Speisung - aber (selten) Spannungen waren nicht bekannt. Different, details not known
from Radiomuseum.org
Model: Pre Amplifier 122
Material
Metal case.
Caisse en métal.
Gerät, dessen Gehäuse aus Metall gefertigt ist. Es kann sich um verschiedenartige Metalle und Oberflächenbearbeitungen handeln. Ist es hingegen nur ein Chassis, so erhält das Gerät eine andere Bezeichnung.Metal case
Shape
Tablemodel, high profile (upright - NOT Cathedral nor Tombstone).
Dimensions (WHD)
10.62 x 4.5 x 6 inch / 270 x 114 x 152 mm
Valves / Tubes
3:
12AX7
(more
for members)
Notes
Power Requirements: from batteries through a plug: —90V at 4mA; +135V at 5mA; 6.3V at 0.9A
The 122 PreAmplifier was designed specifically to increase the sensitivity of the Type 512 Oscilloscope to 5uV/cm, over the band of 1/6Hz to 40kHz.Thus a maximum voltage gain of 1000 is available, while a frequency compensated attenuator network permits the gain to be reduced to 100 to accommodate input signals of as much as 0.2V peak amplitude without distortion.
Maximum Output: —20Vpp
The tube 2AX7 is special selected for differential balance.
This model was suggested by Pius Steiner.
Source: Tek Catalog 1950
No further information
on
Pre Amplifier 122 (Tektronix, Portland, Oregon)
