Sony PS-11 - Section 1: Outline; Block Diagram Overview; Hall Motor (TMD-21) Operation; Hall Element Principle

| PS-11
SECTION 1.
OUTLINE
1-1.
BLOCK
DIAGRAM
- -- RVIO2 a+
2
]
33
I/3rom
|
Q
TMD-
21
:
RV2
|
—
GAIN(HI}
ro
BUFFER
AMP
OC
AMP
I
.
=
Q6
Q7
ICi-2
= COMPARATOR
can
04,9
|
,
ae
RV3
HES
GAIN(H2)
°
a PHONO
Lae PLUG
ae R-CH
De aa (@)
bas RED
Pe : i:-CH
QB~ii .
MOTOR ORIVE
~ 1-2. HALL MOTOR (TMD-21)
Adoption of the BSL (brushless and slotless) DC
servo motor has the following major advantages.
1)
Very
little
noise
due
to
the
elimination.
of
B
|
c
mechanical
contacts,
and
current
control
by
electronic
switching.
Hall Element
Pee) arian
gts ea ha Tes : a7 (Ae .
wee A ' = oe. oe Sena see fee > ‘ «
2 OP ge St re geen Tend a Rae 8 Fae ie :
th AGNES De ree 7 ais diiatge iat sealeee vs 7 a
7 x fe ‘ as. 7 aus . i ae ce een | 2 > : . Peery . :
_ +? bear te te wee ; 7 wot eh ot Ber ig, Soo osbetes cb . eee,
a ¥ * . = oe a? . . . ' 5 an
ab = voltage terminals
h cd = current terminals
2) Stable performance and very long operational life.
The operating principles of the Hall Motor | | |
(TMD-21) are described below. |
bottom
VHE-510
® Hail Element (VHE-510) ;
Fig. 1-1.
The maeneue field aterm is converted into Note: There is no distinction between voltage
electrical signals by employing the Hall Effect *. and current terminals in the VHE-510
* The Hall Effect: When a current I flows through a Hall Element.
substance, and a magnetic field B is applied at
right angles to the direction of current flow, a
potential difference V will be generated in a
direction at right angles to both the current and
magnetic field. (See Fig. 1-1.)
t
ne
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oe
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Are
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oe
an
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ys
as
a
ere,
ee
are
-*
-
Sa
Bier
Cie
eet
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ere
sel
ones
x
anne
7
*
us
ae
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et