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JPS5748744

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS5748744
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view used to explain the
appearance and method of use of one embodiment of the present invention, FIG. 2 is a
connection diagram of one embodiment of the present invention, and FIG. It is a connection
diagram used for explanation. 1 AM / FM radio receiver 2 amplifier and speaker unit 4
headphone jack 7 battery power supply 8 headphones IIL and IIR speakers 13 battery power
supply 16 bonding unit 19 contact group Is a power supply switch, SW2 is a timer set switch,
SW3 is a timer release switch, 25 is a receiver circuit, and 26 is an amplifier.
DETAILED DESCRIPTION OF THE INVENTION The present invention comprises an example of a
small radio receiver and an audio device having an amplifier and a speaker in a removable shape,
and both according to the place of use, purpose of use, etc. Ede fi + 1 7/17 '· ·'-1-! The present
invention relates to the configuration of a power supply circuit, in particular to a 1.9 device.
Hereinafter, an embodiment of the present invention will be described with reference to the
drawings. This example, as shown in FIG. 1, includes a small AM / FM radio receiver (1), an
amplifier and a speaker unit (2), It consists of The radio receiver (1) has a tuner unit, an
intermediate frequency amplifier, a stereo demodulation unit, and a headphone amplifier
connected to the stereo demodulation unit as usual. A dial display unit (3) and a power switch
SWl of a slide switch configuration are provided on the front of the radio receiver (1), and a
headphone jack (4) is provided on the upper surface thereof. A volume control knob (5) and a
tuning knob (6) are provided. The radio receiver (1) is, for example, operated by a battery power
supply (7) K consisting of three AAA batteries. Since the power consumption of the radio receiver
(1) is small, it is possible to use a small battery with a small current capacity. When receiving an
FM stereo broadcast, the plug (9) of the headphone jack (4) K headphone (8) is inserted. The
headphone (8) has a headphone cord α0 of the same length (2) and a shaft structure of a
predetermined length, and this headphone cord (11 is designed to act as an FM antenna of the
radio receiver (1). Of course, at the time of AM broadcast reception etc., it is also possible to
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connect a headphone jack (4) K normal earphone plug. Further, the amplifier and speaker unit
(2) includes a stereo amplifier and left and right speakers (IIL) (tlR) connected thereto. このステ
レオアンプは。 External input terminal 1? Not only the stereo signal from the above-mentioned
radio receiver (11 but also the signal from another device such as a dip recorder can be manually
controlled. The amplifier and speaker unit (2) is, for example, a battery t # q consisting of four
single batteries, or a rectified output supplied from the power supply jack αa as a power supply.
The rectified output is formed by rectifying a commercial power supply by a rectifying circuit
called an AC adapter. The power supply of the amplifier and speaker unit (2) is K controlled by a
sleeve timer.
When the timer set switch 8Wzv provided on the upper surface is turned on (3) ★ J, the power is
automatically turned off for a predetermined time, for example, 90 minutes, and the timer
operation is canceled when the flash timer release switch SW3 is turned on K is done to
Furthermore, a rod antenna u51 is provided in the amplifier and speaker unit (2). In the center of
the cabinet of the amplifier and speaker section f2), the radio receiver (!! A mounting portion Oe
conforming to the shape of the r-machine (1) is formed. In the mounting portion Oe, both * @ liK
of the mounting portion Oe are provided with projections (171 for a narrowing guide in the
vertical direction, a locking piece 0 & is provided on the rear wall, and a contact group (II is
provided on the bottom) . A cover 2 illustrated by a two-dot chain line is provided in association
with the contact group 0. The cover 1 is always turned upward by a spring (not shown) K at all
times upward, and the contact group α 9 is touched from the outside to make it a K pile 5. Guide
grooves Qυ are formed on both side surfaces of the radio receiver @, and a locking hole is
provided on the back surface thereof, and a contact group is provided on the bottom surface
thereof. Insert the protrusion 11Q に into the guide barrel from the upper opening surface of the
mounting side I θ of the amplifier and speaker unit (2) to make a radio receiver! Slide 1)
downward, and push down the cover (4) i so that the hooks and one side engage with the locking
holes to combine the radio receiver (1) with the amplifier and speaker section (2 () Let In this
combined state, the corresponding contacts of the contact group on the bottom of the radio
receiver (1) and the contact group li of the amplifier and speaker unit (2) correspond to each
other! ! It will be continued. In addition, pressing the eject button (3) provided in the amplifier
and speaker section 12 K releases the holding condition, and the radio receiver (1) is pressed to
the ground by the spring force of the cover ■. , The united state is released. FIG. 2 shows the
electrical connection in the state where the radio receiver +1+ and the amplifier and speaker unit
(2) are united, and in the figure, (23G) (23L) (23R) (23G) (23a) to (23d). ) Are provided on the
bottom of the radio receiver (1) connected to the contacts (19G) (19L) (19R) (19G ') (19a) to
(19d) of the amplifier and speaker unit (2) The receiver circuit 9 of the radio receiver (1), which
is shown as a contact point, has output terminals (24L) and (24B) and ground terminals (24G)
and (24G ') to which left and right signals are supplied from the headphone amplifier. An antenna
input terminal (24A) of the high frequency amplifier and a wire drawing terminal (24F) are
provided.
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Ground terminal (24G) (5) 1 forgiven (24G is common to the chassis of the radio receiver (1) 1 ?!
It is continued. The ground terminal (24G) is connected to the ground terminal of the headphone
jack (4) and the contact (23G) K via a microinductor, and the ground side of the one-head
telephone (4) is connected via a capacitor to the terminal (24A) K connection is made, and the
headphone cord sound is used as an FM termination antenna as described above. Further, each
of the output terminals (24L) and (24R) is connected to the contact (23L) and (23R) through the
microinductor and the normally closed spring contact of the headphone jack (4). In the stereo
amplifier of the amplifier and speaker section (2), left and right signal input terminals (27L, 27L),
earth terminals (27G), (2yG '), power supply terminals (27F), and left and right signal outputs
Terminals (28L) and (28R) are provided, and [speakers (IIL) (IIR) are connected to a large part of
the output terminals (28L) and (28B). The contact point (IKi) and the ground terminal (27G) are
connected via a microinductor, and the contact point (19G) and the Rondant antenna Q51 are
high frequency KWk isolated via a capacitor. In addition, each of the contacts (19L) (tsR) is
connected to the input terminal (27L) (27R) (6), I, and when the headphones (8) are not used, it
is from the radio receiver (1) A stereo signal is supplied to the amplifier via the hard-on jack (4)
and the contacts and is supplied to the left and right speakers (IIL) (IIR) K. Therefore, even in a
state where the radio receiver (1) and the amplifier and speaker unit (2) are united and the
contacts (23G) (23L) (23R) and (19G) (19L) (19R) are connected, When the headphone jack (4) K
the headphone plug (9) is inserted, the signal supply to the speaker (IIL) (IIR) K is cut off, and it is
possible to listen to the stereo reproduction sound with the headphone (8). The power supply on
and off of the radio receiver (1) alone is performed by the power supply switch 8W1 and the
switching transistors @ and K. The power supply switch SWl has an input contact (31a) to which
a voltage of 4.5 (V) is applied from the battery power (7) through a diode ■ and a voltage of 4.5
(V) from the battery power (7) through a diode It is similar to the off-side output contact (31b)
and the on-side output contact (31c) that are electrically floated. When the power supply switch
8Wl is turned on, the transistor cllK pace current flows and this is turned on to turn on the PNP
type transistor (d). Due to (7), the power supply terminal (24P) (24G ') of the receiver circuit (d) )
K power is added.
As illustrated, when the power supply switch SWl is in the off state, the transistor (d) is turned
off, the transistor gloss is also turned off, and the power supply is cut off. The power supply on /
off of the amplifier and tuner unit (2) is performed by the timer 33. When the set switch SW2 is
turned on, the timer (t) generates a base current that turns on the switching transistor by the
power supply a3 (also not shown, sometimes placement from the power jack side is used), The
switching transistor (turned on) is turned on from this base charge RK, the power supply
terminal (27P) (27G ') K power of the amplifier is supplied, and after a predetermined time,
generation of the base current from the timer ring disappears automatically. The transistor is
turned off, the transistor is turned off, and the power supply is cut off. When the release switch
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SWs is turned on, the base current is not supplied from the timer to the transistor, the transistor
is turned off, and the power is turned off. (8) The above power on / off is when the radio receiver
jll is separated from the tuner and amplifier unit (2). Power on / off when both are combined is
as follows. First, not only the amplifier (d) but also the receiver circuit (2) K is supplied to tINa3
of the amplifier and tuner unit (2). For this purpose, a transistor is provided whose supply
voltage is supplied to the collector via the transistor, and the supply voltage appearing at the
emitter of the transistor is taken via the contacts 1sa and 23a. M Supply the power supply
terminal (24P) K to the horizontal circuit. A zener diode (9) is connected to the base of the
transistor (d) to provide a predetermined pace bias. The power supply voltage of 6 [v] is lowered
to 4.5 (V) by this transistor and zener diode 2 and the receiver circuit [4] is made to compensate
for the difference in power supply voltage. Therefore, power on / off in the combined state is
performed by turning on / off the transistor acid, and the timer 制 御 controls the power of both
the receiver circuit k and the amplifier (t). Also, the pace of the radio receiver (1) (9) and the
contact (23d) are connected to the pace of the contact (23d), and the contact (19d) connected to
the contact (23d) and the ground When the contact point (190) is connected, in the combined
state, the pace emitter of the transistor is short-circuited, and the transistor (2) is always turned
off and the transistor (d) is also turned off.
This prevents the consumption of the battery power supply (7). Further, the pace of the
transistor (ii) is connected to the radio receiver (the on-side output contact (31c) of the power
supply switch SW1 of 11) via the 11 points (19c) (23c). At the same time, the end of the charge
11t13 is connected to the input contact (31m) of the power supply switch SW1 through the
diode (d) and the contact (19b) and the contact (23b). Therefore, by turning on the power switch
SW1 of the radio receiver (1), the transistor can be turned on, and the power of both the
amplifier (1) and the receiver circuit (g) can be turned on. That is, in the normal state where the
release switch SW3 is pressed, the power supply switch SW, K of the radio receiver fi + can turn
on and off the power supply of the receiver circuit 4 and the amplifier. In this example, the power
supply voltage (6 (V)) of the amplifier and sub-motor (2) is the radio receiver t. Is higher than the
power supply voltage (4, 5 (V)), so that the diode .omega. Is turned off 12, the diode (turned on)
is turned on K, and the current supplied to the base of the transistor .quadrature..quadrature. ,
Generated from the power supply 0J. Note that the timer G and the switch SW2. Instead of sw3,
K may be used to use a power switch. It can be understood from the description of one
embodiment described above 51C. According to the present invention, the radio receiver (1) and
the amplifier and speaker unit (2! The power supply of the amplifier and speaker unit (2) is also
supplied to the radio receiver (1) side in the state in which ! Small size can be used, the radio
receiver can be miniaturized, the battery life of the radio receiver (1) can be extended, and each
device in a separated state can be used alone. Unlike the 6th invention which can be operated by
the power supply, as shown in the 3rd white, the battery charge S of the radio receiver il + is also
supplied to the amplifier and the speaker section (2), and the power supply switch Therefore,
when the switch is controlled to be controlled, the battery life is shortened, and the amplifier and
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the speaker 5 (27 can not be operated independently. In the 5J combined state of the abovedescribed embodiment, either of the power switch SW1 or the amplifier and speaker unit (switch
SW 2.8 W of the radio receiver (1) The staff can be turned on and off, and even in the combined
state, the power can be turned on and off in the same manner as the single unit, and the
operability is good.
In this case, the wording of the amplifier can be turned on only by attaching the amplifier and the
speaker unit (2) K to 1 in a state where the power switch Sw1 of the radio receiver + 11 is turned
on. Furthermore, as described above, in the present invention, since the power source required in
the combined state is only the one on the amplifier and speaker unit (2) side, no battery is set in
the radio receiver (1). Even when the battery is discharged, there is an advantage that the color
of the radio receiver (Iltl '' operating or not. In addition, when using another scratch number
device such as 1 cassette 1- precoder other than the radio scratching machine (1), another (when
connecting the speaker integrated with the I 21 to the amplifier or when the amplifier 1 is a
preamplifier K Even this invention can be applied.
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