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1. Music sensor integrated circuit
1-1.
Terminal connection
Music sensor
$1-10 {at_ playback)
Pin (16}; 1C1
sl
is operatin,
1c1 (ica1aep){|
[ > '* OPerating
so
PE
a e .
ON sipedancl
_MUTING circuit 03
pin (5); reset by C2;
:
disptay becomes 0
a
Q1,2,3,4,5
are all ON."
Figure 3.
1-4-1. Count DOWN
circuit
Figure 1.
1-2.
Terminal
IC? (M51542L)
pin (13) {pre-output)
music sensor.IC1
{TC9138P) pin (2)
{C1 (M51542.)
pin (14) (pre-input}
Terminal No. | Symbol
Solenoid control signal
:
| "Low", "High" pulse signal
music sensor
Q1 (2SA1015} OFF
Music interval time output pulse
:width OSC terminal
Figure 4, .
1-4-2. Count UP circuit
Direct
preset
input
signal
driver
output terminal Input/Output
music sensor 1C1
LED display
(TC9138P) pin (6)
et tet ee
Cee
es
oe ee
'Table-1
$10 [program switch)
continues repeating
1-3. Explanation of operation
:
a
On repair of the music sensor
;
Pin {2) DC signal
time when the DC signal
When music selection is completed
@ pulse is output.
——l
Ts
= Te = t/fose x 32
This is not detected as a interval, so the indication
also does not change,
Figure 2.
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