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556: Difference between revisions
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Also, the 565 uses a single HV transformer to produce all CRT voltages, | Also, the 565 uses a single HV transformer to produce all CRT voltages, | ||
whereas the 556 uses two transformers. | whereas the 556 uses two transformers. | ||
The 556 uses post-deflection acceleration; | The 556 uses post-deflection acceleration; the 565 does not. | ||
the 565 does not. | |||
==Internals== | ==Internals== | ||
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The lower beam transformer, T1301, produces: | The lower beam transformer, T1301, produces: | ||
* CRT anode voltage: +8150 V | * CRT anode voltage: +8150 V | ||
* lower beam cathode voltage: | * lower beam cathode voltage: −1850 V | ||
* lower beam control grid (blanking) voltage: varies, about | * lower beam control grid (blanking) voltage: varies, about −2000 V | ||
The upper beam transformer, T1351, produces: | The upper beam transformer, T1351, produces: | ||
* upper beam cathode voltage: | * upper beam cathode voltage: −1850 V | ||
* upper beam control grid (blanking) voltage: varies, about | * upper beam control grid (blanking) voltage: varies, about −2000 V | ||
The CRT in model 556 is the [[T5560]]. | The CRT in model 556 is the [[T5560]]. | ||
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<gallery> | <gallery> | ||
Tek 556 trace.jpg | Tek 556 trace.jpg | ||
556_front.JPG | Front panel of a 556 | 556_front.JPG | Front panel of a 556 | ||
Rm556.jpg | Front view of an RM556 | Rm556.jpg | Front view of an RM556 | ||
Wellenkino 556.jpg | Wellenkino 556.jpg | ||
Tek 556 rear2.jpg|Rear View | Tek 556 rear2.jpg | Rear View | ||
Tek 556 rear.jpg | Rear view | Tek 556 rear.jpg | Rear view | ||
Tek556-LT-AppNote49.jpg | 556 screen shot showing a total of six traces, two on one timebase and four on the other. From Jim Williams, Linear Technology Application Note #49 | Tek556-LT-AppNote49.jpg | 556 screen shot showing a total of six traces, two on one timebase and four on the other. From Jim Williams, Linear Technology Application Note #49 | ||
Tek 556 two trace.jpg|Two beams making two traces | Tek 556 two trace.jpg | Two beams making two traces | ||
Tek 556 two 1a1.jpg | Tek 556 two 1a1.jpg | ||
Tek 556 trace2.jpg | Tek 556 trace2.jpg | ||
</gallery> | </gallery> | ||
===Internal=== | ===Internal=== | ||
<gallery> | <gallery> | ||
Rm556 trigboard.jpg | Trigger board contains two tunnel diodes and a reed relay | Rm556 trigboard.jpg | Trigger board contains two tunnel diodes and a reed relay | ||
556-top.JPG | Top view | 556-top.JPG | Top view | ||
Rm556 top2.jpg | Top view of RM556 | Rm556 top2.jpg | Top view of RM556 | ||
556-right.JPG | Right side view | 556-right.JPG | Right side view | ||
556_bottom.JPG | Bottom view | 556_bottom.JPG | Bottom view | ||
556_bottom2.JPG | Bottom view with power supply/calibrator/delay pickoff chassis swung out | 556_bottom2.JPG | Bottom view with power supply/calibrator/delay pickoff chassis swung out | ||
Rm556 output amp.jpg | Output amplifier driving deflection plates | Rm556 output amp.jpg | Output amplifier driving deflection plates | ||
556_tube1.jpg | Neck of 556 CRT - the tube contains two electrically independent guns and vertical and horizontal deflection plates | 556_tube1.jpg | Neck of 556 CRT - the tube contains two electrically independent guns and vertical and horizontal deflection plates | ||
</gallery> | </gallery> | ||
===Schematics=== | ===Schematics=== | ||
<gallery> | <gallery> | ||
Tek 556 vert.png|Vertical amp schematic | Tek 556 vert.png | Vertical amp schematic | ||
Tek 556 hvps.png|CRT Circuit | Tek 556 hvps.png | CRT Circuit | ||
</gallery> | </gallery> | ||