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JPS543102

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DESCRIPTION JPS543102
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram showing a prior art example,
and FIG. 2 is a circuit diagram showing one embodiment of a power booster of the present
invention. 1 ... car radio, 2, 3 ... signal, 4 ... front and back speaker switching switch, 5 ... power
booster, 6 ... front speaker, 7, 8 ... rear speaker, 9 to 1・ ・ ・ 1 ... mixing resistance, 12.13 ...,
amplifier.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power booster,
in particular one. The present invention relates to a power booster provided between a car radio
provided with a front and rear speaker changeover switch in a channel and the front and rear
speakers. This conventional power booster is shown in FIG. 1, 1) "J-, 3102 when the front and
rear speaker selector switch 1 provided on one channel of the car radio is switched to the rear
speaker side, the car radio of that channel Signal is amplified and input to one of the rear
speakers 7 lrL. The car radio signal of the other channel is also amplified and input to the other
rear speaker 8, but when the switch is switched to the front speaker side, the car radio signal of
that channel is Just after being input to the speaker 6, one after the other. -There is no need to
input a 7KFi signal. Therefore, in this case, the front speaker 6 is only ringed on one channel and
the other after the other channel on the other channel. When the sound field is in an undesirable
state, there is a drawback. The object of the present invention is to provide a power booster
which can always improve the sound field in a car without the drawbacks of the above-described
nineteenth American technology. -The feature of the present invention is that when the speaker
switching switch provided on one channel of the car radio is switched to the front, 2 ° beaker
side, the signal of that channel of the car radio is transmitted to the front speaker The circuit has
a circuit configuration in which the signal is amplified and is also input to a rear speaker for the
channel. Hereinafter, the present invention will be described in detail using embodiments shown
in the drawings. FIG. 2 is a power booster of the present invention. FIG. 6 is a circuit diagram
showing an embodiment of the present invention, in which a car radio and a speaker are also
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shown for ease of explanation. . 2. In FIG. 2, 1 is a car radio, and a car radio 1 outputs signals 2
and 3 of 2 channels so that a signal 2.3 is output. The signal 2 Fi front and rear speaker selector
switch 4 of one of the channels is output differently. sFi Power Booster, 6 is the front speaker for
channel signal 2. 7 rear speakers, 8 is a rear speaker for the channel signal 3. Power booster 5 is
a mixing resistor 9-11. The amplifier is composed of 12.15, which is connected as shown in the
figure. Next, the operation will be described. The first radio channel signal 3 is always amplified
by the amplifier 13 and input to the rear speaker 8.
5. The first radio channel signal 2 is amplified by the amplifier 12 and input to the rear speaker 7
when the front and rear speaker selector switch 4 is switched to the rear speaker side, but #.
There is almost no input to Pee force 6. When the switching switch 4 is switched to the front
speaker side, the channel signal 2 is directly input to the front speaker 6: part of the channel
signal 2 is amplified by the amplifier 12 and is also input to the rear speaker 7. Therefore, in this
case, the previous speaker 6. In addition to the rear speaker 8, since the rear speaker 7 'also
rings, the interior of the vehicle is made a powerful sound field. ことができる。 As described
above, according to the 5th invention, the remarkable effect of being able to always make the
inside of the car a good sound field that is powerful and powerful.
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