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Types 545 and 545A have a | Types 545 and 545A have a | ||
six stage differential distributed vertical amplifier | six stage differential [[distributed amplifier|distributed vertical amplifier]] | ||
made of twelve [[6DK6]] tubes. | made of twelve [[6DK6]] tubes. | ||
The vertical amplifier used in the 545A is also used in the [[551]] and [[555]]. | The vertical amplifier used in the 545A is also used in the [[551]] and [[555]]. | ||
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The trigger circuit used a [[6DJ8]] tube in the 545 and 545A. | The trigger circuit used a [[6DJ8]] tube in the 545 and 545A. | ||
NPN transistors are used | NPN transistors are used in the 545B trigger circuit. | ||
Some feel that Type 547 replaced Type 545, but this is not quite true; | Some feel that Type 547 replaced Type 545, but this is not quite true; | ||
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(The Type 544 is likewise the upgrade for the 541.) | (The Type 544 is likewise the upgrade for the 541.) | ||
The Type | The Type [[K|53K/54K]] plug-in was introduced with the 545 and 541, | ||
and until Type [[L|53/54L]] came out in 1957, | and until Type [[L|53/54L]] came out in 1957, | ||
it was the only plug-in that could take full advantage of their bandwidth. | it was the only plug-in that could take full advantage of their bandwidth. | ||
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* [http://bama.edebris.com/download/tek/545b/545b.djvu Tektronix 545B Manual (PDF)] | * [http://bama.edebris.com/download/tek/545b/545b.djvu Tektronix 545B Manual (PDF)] | ||
* [http://w140.com/535_545_operators_handbook.pdf Tektronix 535 and 545 Operators Handbook (PDF)] | * [http://w140.com/535_545_operators_handbook.pdf Tektronix 535 and 545 Operators Handbook (PDF)] | ||
* [http://w140.com/tek_balancing_545_vert.pdf Balancing the 540-Series Vertical Amplifier (PDF)] | |||
<gallery> | <gallery> |