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+ | ====== NG-TL ====== | ||
+ | **Netzanschlussgerät NGTL** (Mains power supply); produced by [[Zellweger, | ||
+ | Die ab 1935 bei der Truppe eingeführte Telefunken - Station [[SE-210|" | ||
+ | |||
+ | The Telefunken " | ||
+ | |||
+ | {{: | ||
+ | |||
+ | ===== Technical Data ===== | ||
+ | * [[Principle]]: | ||
+ | |||
+ | The mains power supply provides all necessary voltages to operate the radio sets [[SE-210|TL (SE-210)]] and [[SE-212|TL BBC (SE-212)]]: the plate voltage 330 V (160 mA), heaters voltage 8,5 V (3,5 A), grid bias voltage 65 V (0,65 mA). | ||
+ | |||
+ | ==== Power Supply ==== | ||
+ | * [[Mains]]: 120, 145, 220, 250 V; 160 VA | ||
+ | |||
+ | ==== Dimensions ==== | ||
+ | * mm, 20.2 kg | ||
+ | |||
+ | ==== Accessories ==== | ||
+ | A small wooden box contains the power cord, a spare rectifier tube [[de:83]], spare fuses and a lamp socket outlet (the so called " | ||
+ | |||
+ | ===== Operation ===== | ||
+ | The power supply unit is connected to the mains with the main switch in position " | ||
+ | |||
+ | With the generator cable, the mains power supply is connected to the battery case of the [[TL]] station. | ||
+ | |||
+ | Now the power supply is switched on with the mains switch, after a delay of around one minute, the plate voltage of 330 V is switched on. | ||
+ | |||
+ | Since the heaters accumulator of the [[TL]] is used for buffering, the power supply unit must only be used with the 6 V heaters accumulator connected to the battery case of the [[TL]]. | ||
+ | |||
+ | ===== Technical Principle ===== | ||
+ | The plate voltage of 330 V is rectified with a mercury rectifier tube. Since this must be pre-heated before applying the voltage, a bimetal switch ensures a delay of one minute until the high voltage is switched on. | ||
+ | |||
+ | To rectify the heaters voltage, selenium rectifiers are used in a bridge circuit. Since the voltage can drop due to aging of the rectifier, the voltage drop can be compensated. | ||
+ | |||
+ | Also the grid voltage is rectified with a selenium rectifier. | ||
+ | |||
+ | Two circuit breakers protect the mains voltage connector, a high-frequency filter in the mains supply prevents high frequency from the transmitter to flow back into the mains power installations. With a voltmeter, the applied mains voltage can be controlled. | ||
+ | |||
+ | ==== Valve Layout ==== | ||
+ | Rectifier valve [[de:83]], selenium rectifier 120/0,3 and 12/4,8. | ||
+ | |||
+ | ==== Development ==== | ||
+ | The mains power supply NGTL has been developed by [[Zellweger]], | ||
+ | |||
+ | ==== Fiel use ==== | ||
+ | From 1942, the mains power supply and the supplementary antenna material has been delivered to the troops. | ||
+ | |||
+ | {{gallery>: | ||
+ | |||
+ | ===== Technical Manuals ===== | ||
+ | |||
+ | ==== Additional Information ==== | ||
+ | * [[http:// | ||
+ | * [[https:// | ||
+ | * [[http:// |
en/ng-tl.txt · Zuletzt geändert: 2018/12/29 13:35 von 127.0.0.1