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4 CIRCUIT DESCRIPTION
4-1
4 CIRCUIT DESCRIPTION
4.1 VERTICAL DEFLECTION
4.1.1
Attenuator
Ch. A and Ch. B are identical. For this reason, only Ch. A will be described. The input
signal is fed to the attenuator by means of the input coupling switch $1.
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In position "AC", the input signal is coupled via C2 to block DC components.
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In position "GND", the attenuator input is connected to ground.
-
In position "DC", the input is directly connected to the attenuator.
The attenuator consists of two sections. The first one, consisting of S2a and S2b,
performs 1:1, 10:1 and 100:1 attenuation. The second one, S2c, performs 2:1, 5:1 and
10:1. Output from the attenuator, a single-ended (asymmetrical) signal, is fed to the
preamplifier.
4.1.2
Preamplifier
4.1.3
Intermediate amplifier
4.1.4
Y-out amplifier
=
4.1.5
Vertical switching circuit
4.1 VERTICAL DEFLECTION
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