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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a connection diagram showing an embodiment
of the present invention. 1 ...... tuner, 2 ...... Tepudetsuki, 3 ...... stereo amplifier, 4 stomach ... input
switching box, 41 ° 41 ', 42, 42' ... · · · · · · Input terminal, 43, 43 '· · · · · · · · Output terminal, 53-1
to 53-4 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·.
DETAILED DESCRIPTION OF THE INVENTION In the present invention, music such as tuners or
tapedecks (any one of J-derived signals from υ-north-fully-selectable amplification 4 (/ apply
switching device) VC1 ■ It is something that is configured to be able to switch music sources by
simple operation, and the ratio of the current car stereo and the main frame f1 is also extremely
worse, and this car stereo smell It is desired to have a high-faith cliff of sweet chestnut B that is
higher than Temo. As a result, each of the components O and I is provided with a tuner or a table
deno I- in order to give the ability, the music, the signal of the north or the like is marked on a
stereo amplifier and reproduced by a speaker Shadow lines called so-called component types
have been adopted. Therefore, when adopting the system as described above, it becomes
necessary to switch and send up any one of ten thousand signals from the tuner and the signal
from i-tape decoder. The switching device in this case is, for example, the tuner's playback mode
VC if the tuner's power switch is on and the tape's playback mode VC is on, and the tape's O
power switch + i-on (the tape's power switch dt1 normal cassette or car tg + Turin tape Is turned
on), and when both power switches are turned on, priority is given to the tape deck so that only
the tape deck is reproduced, It is preferable to configure so that the power supply current is not
supplied even if the tuner side power supply is turned on. In the case of the 4i''in-car Nissui
system i'L :, it is desirable that the switching operation as described above can be automatically
performed by a simple operation so as not to hinder the operation. The present invention is
intended to actualize the above-mentioned problems, and will be described below according to
the illustrated example. In the figure, l and 承 receive tuners and tapes corresponding to the
music sources of 11 and ス テ レ オ 2, and 3 has stereo amplifier kyr <シ ー C. The tuner / V is
equipped with a stereo output, a power switch S1, and a power switch S1. Also R. Is a pseudo
representation of the tuner circuit t-which is an electric charge for the power supply. Next, a
power switch 8. ON which is turned on when the stereo output terminal L, Rk and a cassette or
cartridge tape is attached to the tape decoder (3).
Is equipped. Also, R represents a motor circuit or the like acting as a load on the power supply in
a pseudo manner. Furthermore, stereo input electronic R, R, Sguereo output terminal L /, B /, am
input to the above stereo amplifier 3! )J/と、バッチ! 33. input terminals 3 and output 4
terminals receiving power supply current from I-VB. And a filter circuit comprising nine coils L
connected between the input and output terminals and a capacitor C8. A box surrounded by a
broken line indicates an input switching box, and in this in-hand box, an input terminal ai that
receives a signal from the tuner l, <tz ', and an input 1 rice pad that receives a signal from the
tape deck cop 8 and a switch S, -.quadrature., 8. -1, and an output fan stage Q 'providing an
amplifier 3 with a signal selected by the changeover switch, and an input end 4) receiving power
source current from a battery VB supplied via an ann 13 An output insulator for supplying the
power supply current to the tape deck, an output electron 4 for applying the power supply
current to the tuner 1 via the changeover switch S, -8, and a power of the tuner I 7. An input
terminal ≠ 7 for receiving a power supply IE current obtained via the switch S0, an input 1 ≠ t
for receiving a power supply current obtained via the tape switch 8m, and these two source input
1 ≠ 7. The switch S, -4 which selects the input from the power source, the output terminal of the
power supply current obtained via this switch S, □, and the power switch S of the above tape
decoder are energized only when the power switch S is turned on. , The above changeover switch
8. A relay R @ that switches all of -0 to 51-4 in the reverse direction to that shown in the figure is
provided. The operation of this switching device will be described below. First of all, when the
power switch f-8 of the tuner 1 is turned on, the power supply current from the battery vII is
input as follows: 1 input 3 terminals, JA; + ′ ′ ′ input terminal 4 switching ′ ′ ′ ′ 8. →
Hower switch Sl → Input switch → Switched switch 6 6 S → S 4 → Output terminal switch →
Input ladder 31 applied to (5) stereo amplifier 3 and at the same time the signal from tuner I is
The input terminal of the stereo amplifier 3 is brought to R via the changeover switch 55-ml5s-s.
Therefore, the circuit at this time is set to the reproduction mode of tuner I. Next, when only the
tape switch of the power switch S is turned on, the power supply current from the battery VB is
as follows: input terminal 32 → output 1 33 → input terminal stopped → output terminal 砧 →
power switch S → input terminal q gold The relay Ravc is applied via the relay R.sub .. As a result,
the relay R.sub ...
Therefore, the power supply current provided to the power switch is further applied to the
stereoan 7JIC by the path of the changeover switch S4.fwdarw.output terminal
block.fwdarw.input insulator 3 /, and at the same time, the signal from the tape is switched. It is
also run to the stereo amplifier 30 input n-fed LIF & via 81-, + 81- *. Therefore, the circuit at this
time is made to be in the reproduction mode of the tape deck. The power supply current remains
unchanged even when the power switch (6) and 5-S8 of the tuner I are turned on in the tape
deck co-playback 11ic. −1によ? Since the power supply current is not supplied to the tuner 1,
the signal from the output terminal of the tuner and R is also cut off by the switch 'l-1e8B- @.
Therefore, even if the power switch 81 + 81 of the tuner l and the tape decoder is turned on at
the same time, the tape deck is always reproduced with priority, and the power switch S
automatically turns on the tuner / 9 power supply automatically only when the power switch S of
the tape switch is turned off And act to provide a signal to the amplification 63. It is possible to
connect between the above-mentioned 9 Che I, the tape de Tsukiko, the stereo amplifier 3 and
the switch box interposed between them with a multi-pin jack of at least about 5 pino including,
for example, the earth line. However, by using such means, the user can very easily and definitely
be connected to the circuit as illustrated. As described above, the present invention selectively
selects the signal from the music source whose power switch is automatically turned on only by
the operation of the power switch provided in the tuner or the audio recorder etc. Because it can
be played back, its operation is extremely easy, so there is less risk of interfering with driving, for
example, while driving a car, or even turning on the respective power switches of the two music
sources Since only one thousand given priority will always be reproduced, it is possible to make
the purpose of this invention into light as described at the beginning.
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