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513: Difference between revisions
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$1650 with the delay line or $1600 without. | $1650 with the delay line or $1600 without. | ||
==Vertical Signal Path== | ==Vertical Signal Path== | ||
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Each position selects a range of sensitivities. | Each position selects a range of sensitivities. | ||
The positions of the vertical sensitivity switch are: | The positions of the vertical sensitivity switch are: | ||
{| class="wikitable | {| border="1" style="border-collapse:collapse" class="wikitable | ||
|- | |- | ||
! scope="col"| Position | ! scope="col"| Position | ||
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The next scopes to use distributed amplifiers were | The next scopes to use distributed amplifiers were | ||
the [[517]] in 1951 and then the [[541]] and [[545]] in 1955. | the [[517]] in 1951 and then the [[541]] and [[545]] in 1955. | ||
==CRT== | |||
It used a [[5XP]] CRT initially, and then switched to a Tek-made CRT. | |||
[[Stan Griffiths]] says, | |||
<blockquote> | |||
"The 513D used two different CRT types, depending on instrument serial | |||
number. From serial number 101-1887, the 5XP2 was used (Tek Part Number | |||
154-066). From serial number 1888-up, the [[T51P2]] was used (Tek pn 154-081). | |||
This one was made by Tek and you could retrofit it into the early 513Ds that | |||
came with the Dumont 5XP but it required a modification kit (040-0094-00). | |||
I have the instructions if you need them. Later, the 154-081 (also known as | |||
[[154-0081-00]]) was replaced by the 154-0342-00 which is quite common and also | |||
used in the 530 series of scopes. If your 513D serial number is below 1888, | |||
the mod kit will have to be installed if you want to use this tube. I did | |||
not look at the mod instructions in detail, but often, with the | |||
instructions, you can put your own kit together and modify the scope just | |||
fine." | |||
</blockquote> | |||
==Low Voltage Power Supply== | ==Low Voltage Power Supply== | ||
The low voltage power supply of the 513 puts out six voltages: | |||
{| border="1" style="border-collapse:collapse" class="wikitable | |||
|- | |||
! scope="col"| Voltage | |||
! scope="col"| Regulation | |||
! scope="col"| Rectification | |||
|- | |||
| +800VDC | |||
| [[6X4]] | |||
| +225V is reference, [[6AU6]] error amp, [[12B4]] pass tube | |||
|- | |||
| +330VDC | |||
| [[selenium rectifiers]] | |||
| unregulated | |||
|- | |||
| +275VDC | |||
| [[selenium rectifiers]] | |||
| -140V is reference, [[6AU6]] error amp, [[6AU5]] pass tube | |||
The 513 has no [[thermal cutoff | |- | ||
| +225VDC | |||
| [[selenium rectifiers]] | |||
| [[5651]] reference, [[12AX7]] and [[6AU6]] error amp, [[6AS7]] pass tube (both triodes in parallel) | |||
|- | |||
| -140VDC | |||
| [[6X4]] | |||
| [[OD3]] shunt regulator | |||
|- | |||
| -300VDC | |||
| [[6X4]] | |||
| unregulated | |||
|} | |||
The 513 has no [[thermal cutoff]]. | |||
==High Voltage Power Supply== | ==High Voltage Power Supply== | ||
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==Mechanical== | ==Mechanical== | ||
The 513 weighs 75 pounds and uses a maximum of 580 watts. | The 513 weighs 75 pounds and uses a maximum of 580 watts. | ||
==Pictures== | ==Pictures== | ||