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JPS51120641

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DESCRIPTION JPS51120641
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 and FIG. 2 are partial longitudinal side views
showing one embodiment of the present invention and the electric circuit diagram thereof, and
FIGS. 3 and 4 are other embodiments of the present invention. FIG. 5 is a partial longitudinal
sectional side view and an electric circuit diagram thereof, and FIG. 5 is a view for explaining the
necessity of the correction circuit. 1 ииииии Jack, 2 ииииии Plug connected to the cord of the microphone,
иии и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и correction circuit, 5 и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и 1-bin plug connected to 1do, plug и и A jack that joins with pin brag 7 Fig. 1 Fig. 2-91-Japanese Utility Model Application
Publication No. 51-120641 (2) Fig. 3 Fig. 4 Fig. 5 (a) 1001 10 10 K (? (C)? \ + 00 l 10 10 K-M-,
1 bed (Hr)-JLJ number (Hz) roundabout: L & (Hz)-92-
DETAILED DESCRIPTION OF THE INVENTION In the present invention, a microphone is
connected to and used in an amplifier (audio amplifier) which has an input terminal of a record
signal from a record player but does not have an input terminal of a microphone signal. Relates
to an adapter for microphone (1) 1 '1 1 connection for enabling to -1 Conventionally, in order to
use a microphone, an input terminal for connecting the microphone and a signal amplifier
(preamplifier) had to be provided. The reason is that the amplifier for amplifying the record
signal has a well-known R / C AA characteristic suitable for the amplification of the signal, and it
is assumed that a microphone can be connected to the input terminal of this record signal. This is
also because the microphone signal is not faithfully amplified for the above RIAA. In this
invention, the microphone is connected to the input terminal of the amplifier's record signal via
the microphone connection adapter which incorporates a correction circuit combining a resistor
and a capacitor so that the microphone signal is faithfully amplified. And a microphone can be
used, and the drawings will be described in detail below. 1 and 2 are a partial longitudinal
sectional side view and an electric circuit diagram showing one embodiment of the present
invention ((2)-, 1 is a plug 2 connected to the other end of the microphone cord) A jack 4
01-05-2019
1
provided in the housing 3 to be joined, 4 is connected to this jack and incorporated in the
housing 3 so that the well-known RIAA characteristic for record reproduction is suitable for
amplification of a microphone signal It is a correction circuit to be changed, and is configured by
combining a capacitor C and a resistor R. The other end of the correction circuit 4 is at the base
end of the cord 6 provided with the connection terminal 5 (pin plug) which can be connected to
the record signal input terminal (not shown) of the amplifier at the tip in the housing 3 It is
connected. FIG. 3 and FIG. 4 are a partially longitudinal side view and an electric circuit diagram
showing another embodiment of the present invention, and the same components as those of the
above embodiment are described with the same reference numerals. The point different from the
above embodiment is that the case 3 is also provided with a jack 8 joined to a pin plug 7
connected to the other end of the cord from the pickup so that both the record player and the
microphone can be used. Therefore, the electric circuit is also different as shown in FIG. The
record signal input from the jack 8 is 1. It does not need to go through the correction circuit as
described above, so it flows directly to the code 6.
On the other hand, the microphone signal input from the jack 1 enters the correction circuit 4
through the variable resistor VR and flows to the cord 6 through the correction circuit 4.
Therefore, if the connection terminal 5 provided at the tip of the cord 6 of this adapter is
connected to the record signal input terminal (not shown) of the amplifier, the microphone plug
2 is connected to the jack 1 provided on this adapter It is possible to use a microphone to join, to
connect a pin plug 7 from a record player to a jack 8 to use a record player, or to use them
simultaneously. Then you can play an accompaniment-only record and sing a song using the
microphone accordingly. FIG. 5 is for explaining the necessity of the correction circuit 4. That is,
as shown in FIG. 6A, the characteristic of the amplifier for reproducing a standard record (4) is to
increase the well-known RIAA characteristic, that is, the low-pass gain and to lower the high-pass
gain. ing. Therefore, if the microphone signal is put into this amplifier as it is, the voice becomes
very unclear. Then, by inserting the microphone signal into the amplifier through the correction
circuit 4 for reducing the low-pass gain as shown in FIG. A flat characteristic output is obtained.
Although not shown in this embodiment, it is also possible to use a microphone in stereo by
connecting an adapter for connecting such a microphone to the input terminals of the left and
right channels of the amplifier, or in stereo records. It goes without saying that microphones can
also be used with accompaniment. As apparent from the above description, by providing (5) an
adapter for connecting a microphone as in the present invention, an amplifier for playing a
record that does not have an input terminal for a microphone signal using this adapter Also in
the case of the microphone, it is very convenient. In addition, the configuration of the adapter is
also very simple and simple, since it does not use an active element for amplifying the
microphone signal, but incorporates a simple condenser and correction circuit built into the
adapter. And, it can also be provided at low cost.
01-05-2019
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