Benutzer-Werkzeuge

Webseiten-Werkzeuge


en:e-635

Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

Link zu dieser Vergleichsansicht

Beide Seiten der vorigen Revision Vorhergehende Überarbeitung
en:e-635 [2019/04/07 09:19]
mb
en:e-635 [2019/04/07 09:29] (aktuell)
mb
Zeile 14: Zeile 14:
 ==== Power Supply ==== ==== Power Supply ====
   * [[Mains]]: 110, 125, 145, 200, 220, 245 V AC   * [[Mains]]: 110, 125, 145, 200, 220, 245 V AC
 +  * [[Accumulator / Batteries]]:​ 6 V heaters and 280 V plate battery
  
 ==== Dimensions ==== ==== Dimensions ====
Zeile 46: Zeile 47:
  
 ===== Technical Principle ===== ===== Technical Principle =====
-After two HF preamplifier stages (two [[de:​EF93]]),​ the RF signal is fed to the mixer ([[de:​EK90]]),​ with the oscillator signal from V4 ([[de:​EF93]]) to generate an intermediate frequency of 735 resp. 740 kHz. After two IF amplifier stages ([[de:​EF93]]),​ the signal is demodulated,​ here acts the AVC and the noise limiter, which is realized by two antiparallel diode sections of an [[de:​EAA91]]. The audio signal is preamplified in an [[de:EF93]] and fed to the [[de:EL90]] in the final audio stage.\\ ​+After two HF preamplifier stages (two [[de:​EF93]]),​ the RF signal is fed to the mixer ([[de:​EK90]]),​ with the oscillator signal from V4 ([[de:​EF93]]) to generate an intermediate frequency of 735 resp. 740 kHz. After two IF amplifier stages ([[de:​EF93]]),​ the signal is demodulated,​ here acts the AVC and the noise limiter, which is realized by two antiparallel diode sections of an [[de:EAA91]] or [[de:EB91]]. The audio signal is preamplified in an [[de:EF93]] and fed to the [[de:EL90]] in the final audio stage.\\ ​
 For CW reception, the signal of the [[BFO]] ([[de:​EF93]]) is mixed to the intermediate frequency, another [[de:EF93]] is used in the calibrator, which provides calibration signals every 500 kHz on the dial. For CW reception, the signal of the [[BFO]] ([[de:​EF93]]) is mixed to the intermediate frequency, another [[de:EF93]] is used in the calibrator, which provides calibration signals every 500 kHz on the dial.
  
 ==== Valve setup ==== ==== Valve setup ====
-V1, V2 ([[de:​EF93]] or [[de:​6BA6]],​ HF preamplifier);​ V3 ([[de:​EK90]] or [[de:​6BE6]],​ mixing stage); V4 ([[de:​EF93]] or [[de:​6BA6]],​ oscillator);​ V5, V6 (two [[de:EF93]] or [[de:​6BA6]],​ 1st and 2nd IF amplifier stage); V7 ([[de:​EB91]] or [[de:​EAA91]] or also [[de:​6AL5]],​ demodulator);​ V8 ([[de:EAA91]] or comparison types , AVC]]; V11 ([[de:EAA91]] or comparison types, noise limiter); V9 ([[de:​EF93]] or [[de:​6BA6]],​ AF preamplifier),​ V10 ([[de:​EL90]] or [[de:​6AQ5]],​ audio final stage); V14 ([[de:​EF93]] or [[de:6BA6]] , [[BFO]]), V15 ([[de:​EF93]] or [[de:​6BA6]],​ calibrator);​\\ ​+V1, V2 ([[de:​EF93]] or [[de:​6BA6]],​ HF preamplifier);​ V3 ([[de:​EK90]] or [[de:​6BE6]],​ mixing stage); V4 ([[de:​EF93]] or [[de:​6BA6]],​ oscillator);​ V5, V6 (two [[de:EF93]] or [[de:​6BA6]],​ 1st and 2nd IF amplifier stage); V7 ([[de:​EB91]] or [[de:​EAA91]] or also [[de:​6AL5]],​ demodulator);​ V8 ([[de:EB91]] or comparison types , AVC]]; V11 ([[de:EB91]] or comparison types, noise limiter); V9 ([[de:​EF93]] or [[de:​6BA6]],​ AF preamplifier),​ V10 ([[de:​EL90]] or [[de:​6AQ5]],​ audio final stage); V14 ([[de:​EF93]] or [[de:6BA6]] , [[BFO]]), V15 ([[de:​EF93]] or [[de:​6BA6]],​ calibrator);​\\ ​
 V12 ([[de:​5Y3GT]],​ plate voltage rectifier, V13 ([[de:0D3]] or 150C1K, stabilizer),​ V16 ([[de:​EL90]] or [[de:​6AQ5]],​ voltage stabilisator) V12 ([[de:​5Y3GT]],​ plate voltage rectifier, V13 ([[de:0D3]] or 150C1K, stabilizer),​ V16 ([[de:​EL90]] or [[de:​6AQ5]],​ voltage stabilisator)
  
en/e-635.txt · Zuletzt geändert: 2019/04/07 09:29 von mb