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v-Amp details - Plat/Screen regulator.
m (Pic) |
(v-Amp details - Plat/Screen regulator.) |
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* Stage 4: differential, [[12AU6]] pentodes | * Stage 4: differential, [[12AU6]] pentodes | ||
* Stage 5: differential, [[6AG7]] pentodes | * Stage 5: differential, [[6AG7]] pentodes | ||
The 512 has two inputs, "A" and "B", each having its own [[UHF connector]]. | The 512 has two inputs, "A" and "B", each having its own [[UHF connector]]. | ||
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signal is the difference between the voltage at the A input and the voltage at the B input. | signal is the difference between the voltage at the A input and the voltage at the B input. | ||
Built-in true differential inputs are also seen in later scopes such as the [[502]], [[503]], and [[504]]. | Built-in true differential inputs are also seen in later scopes such as the [[502]], [[503]], and [[504]]. | ||
The vertical pr-amplifier stage consisting of stage 1 and 2 is mounted in a sub-frame directly beneath the Vertical Deflection Sensitivity switch. | |||
This stage is switched out of the signal path for higher input signal levels. | |||
A cathode follower voltage regulator V11 - [[12AU7]] - is used to supply the reduced and regulated plate voltages to stage 1 and 2. Similarly another [[12AU7]] - V12 - is used for both screen and plate supply to stage 3 and 4. | |||
Matched pairs of [[12AU6]] and [[5879]] are kept inside the instrument as spare. | |||
They are mounted in a bracket behind CRT base. | |||
===Sweep/Horizontal Amplifier === | ===Sweep/Horizontal Amplifier === | ||