108: Difference between revisions

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 intended for calibration of the [[517]].
-It is the predecessor of the
+It is the predecessor of the more complex and faster [[109]].
-more complex and faster [[109]].
+Repetition rate of the 108 is 240 Hz and the maximum pulse amplitude is 10 V<sub>p</sub> into a 50 Ω load.
-Repetition rate of the 108 is 240 pps and the
+It uses a [[mercury switch]] and [[selenium rectifiers]]. The output is through an [[N connector]].
-maximum pulse amplitude is 10&nbsp;Vpk into 50 Ohm load.
-It uses a [[mercury switch]] and [[selenium rectifiers]].
-The price in July 1959 was $125.  The output is through an
-[[N connector]].
-Referring to the output network photo below, current flows in from the left
+The price in July 1959 was $125.
-through the 1k resistor and charges the four red 0.1 uF capacitors in parallel.
-When the mercury switch (terminals visible at lower right) closes, the capacitors are
+Referring to the output network photo below, current flows in from the left through the 1 kΩ resistor and charges the four red 0.1 μF capacitors in parallel.
-suddenly connected to the output load of the pulse generator, causing a sharp step in the
+When the mercury switch (terminals visible at lower right) closes, the capacitors are suddenly connected to the output load of the pulse generator, causing a sharp step in the output voltage.  The starting voltage of the step is typically 0 V.  The final voltage is adjustable, both in polarity and magnitude.  The range is approximately -10 V to 10 V.
-output voltage.  The starting voltage of the step is typically 0V.  The final voltage is
-adjustable, both in polarity and magnitude.  The range is approximately -10V to 10V.
 * [http://w140.com/tek_108.pdf Tektronix 108 Manual (PDF)]
 <gallery>
-Image:Tek 108 front.jpg|Front view
+Tek 108 front.jpg | Front view
-File:Tek 108 schem.png|Schematic
+Tek 108 schem.png | Schematic
-Image:Tek 108 left.jpg|Left view, mercury switch
+Tek 108 left.jpg|Left view, mercury switch
-Image:Tek 108 right.jpg|Right view, selenium recitifier
+Tek 108 right.jpg  ight view, selenium recitifier
-Image:Tek 108 output network.jpg|Output network, rear of N connector
+Tek 108 output network.jpg | Output network, rear of N connector
-Image:Tek 108 cat.jpg|Page 190 in the 1959 Catalog
+Tek 108 cat.jpg|Page 190 in the 1959 Catalog
-Image:Tek 108 mercury switch.png|Mercury switch
+Tek 108 mercury switch.png | Mercury switch
 </gallery>
 [[Category:Pulse generators]]
 [[Category:Introduced in 1959]]