JPS58196010A - Flat electrolytic condenser, bus line unit made of flat electrolytic condenser and electronic circuit unit using bus line unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel flat electrolytic capacitor, a pass line device comprising a flat electrolytic capacitor, and an electronic circuit device using the pass line device.

An electronic circuit device generally consists of a power supply circuit and a plurality of single circuits that receive power from the power supply circuit.

For example, an audio amplifier consists of a power supply circuit, a preamplifier,
It consists of a tone control amplifier, etc. and a power amplifier. The power supply circuit and other electronic circuits are usually connected by lead wires or wiring films on printed wiring boards, and therefore power is generally not supplied from the power supply circuit to other electronic circuits. This is done through lead wires or wiring films. By the way, since resistance and inductance exist in lead wires or wiring films on printed wiring boards, a distributed constant circuit as shown in Figure 1 is formed in the circuit that supplies power from the power supply circuit to other electronic circuits. Ru. In the same figure, PS is a power supply circuit, PWA,
and PWA' are the positive and negative halves of the power amplifier, TC and TC' are the positive and negative halves of the tone control circuit, and PRA and PRA' are the positive and negative halves of the preamplifier. It's half. cc and cc are electrolytic capacitors connected between the positive terminal and the ground terminal and between the negative terminal and the ground terminal of the power supply circuit PS for absorbing noise and the like. 11.12, Φ...1n is the inductance rl distributed in the lead wire (or wiring film) connected between the power supply circuit PS and the power amplifiers PWA and PWA'.

rl, *eerH is aLi' which is also a resistance.

t2',...Ln' and r1', r2', 0*rn
' is the inductance and resistance distributed in the lead wire (or wiring film) connected between the power amplifiers PWA, PWA' and the tone control circuits TC, TC'. Similarly 11″, 12″, *fist*11″ and resistance r1″
, r2'', e...r n '' are inductance and resistance distributed in the lead wire (or wiring film) connected between the tone control circuits TC, TC' and the preamplifiers PRA, PRA'.

By the way, in such an electronic circuit device, first, the power supply circuit PS is connected to other electronic circuits PWA, PWA', T.
There is a problem in that noise gets on the lead wires etc. that supply power to C, TC', PRA, and PRA', resulting in poor sound quality.

In addition, the power supply circuit PS is used to absorb noise, ripple, etc.
Although electrolytic capacitors cc and cc are connected to the lead wires, most of the effect of providing the electrolytic capacitor CC is lost due to the presence of inductance etc. distributed in the lead wires. Therefore, in the past, as shown in Figure 2, attempts have been made to more completely absorb noise by connecting a large number of electrolytic capacitors CC to cancel inductance at appropriate locations on the power transmission path using lead wires, etc. It was done. However, in this case, a large number of expensive large-capacity electrolytic capacitors must be used, and the number of man-hours for assembling the device increases accordingly, leading to an increase in the price of the device. Furthermore, providing a large number of electrolytic capacitors increases the size of the device and causes problems such as a decrease in reliability, which is not preferable.

Therefore, the present invention makes it possible to reliably absorb noise, ripple, etc. by using a flat electrolytic capacitor as a power supply path, and also prevents the intrusion of external noise, unnecessary signals, etc. The first aspect of the present invention is to cancel the inductance distributed in the supply path of The laminate is housed in a case made of a shielding member, and a plurality of pairs of electrode terminals are provided in the case insulated from the case, and are spaced apart along the longitudinal direction of each of the anode foil and the cathode foil. A flat electrolytic capacitor is characterized in that the same number of terminal connection parts as the electrode terminals are connected to the electrode terminals by appropriate means, A laminate is formed by laminating one or more pairs of anode foil and cathode foil, in which terminal connection pieces are integrally formed at appropriate intervals, through electrolytic paper so that the terminal connection pieces do not overlap each other. , the laminate is housed in a case made of a shielding material, an electrode terminal insulated from the case is provided corresponding to the terminal connection piece, and the terminal connection piece and the corresponding electrode terminal are connected by appropriate means. This is a flat electrolytic capacitor that is characterized by being electrically connected to each other. Further, in a third aspect of the present invention, a long and narrow laminate obtained by laminating one or more pairs of anode foil and cathode foil via electrolytic paper is housed in a case made of a shielding member, and a plurality of anode foils and cathode foils are stacked in the case. A pair of electrode terminals is provided insulated from the case, and the same number of terminal connection parts as the electrode terminals are connected to the electrode terminals, which are spaced apart along the longitudinal direction of each of the anode foil and the cathode foil. This is a pass line device consisting of a flat electrolytic capacitor, which is characterized by being connected by an appropriate means.The fourth aspect of the present invention is a pass line device consisting of a flat electrolytic capacitor connected by an appropriate means. The elongated laminate made of the above is housed in a case made of a shielding member, and a plurality of pairs of electrode terminals are provided in the case insulated from the case, and the electrode terminals are arranged along the longitudinal direction of each of the anode foil and the cathode foil. A pass line device in which an anode foil and a cathode foil of a flat electrolytic capacitor are used as pass lines, and a power supply circuit is provided, in which the same number of terminal connection portions as the electrode terminals located at a distance are connected to the electrode terminals by appropriate means, and a power supply circuit. and - or a plurality of electronic circuits that receive power from the power supply circuit,
An electronic circuit device using a pass line device, characterized in that each electrode terminal of the pass line device is connected to an output terminal of the power source circuit and a power terminal of an electronic circuit that receives power from the power source circuit. .

Hereinafter, the present invention will be described in detail according to embodiments shown in the accompanying drawings.

3 to 6 show an example of the implementation of the flat electrolytic capacitor of the present invention, and FIG. 3 shows an exploded view of a laminate 1 constituting an element of the flat electrolytic capacitor. The 0wJ electrode foil 2 and the cathode foil 3, which are formed by laminating the 0wJ electrode foil 2 and the cathode foil 3 with an electrolytic paper 4 interposed therebetween, have an elongated shape, and have, for example, four terminals spaced appropriately apart from each other on the negative side edge of each. Connection pieces 51.52.53.54 and 61.62.63
．． 64 are integrally formed, and the terminal connecting pieces of the anode foil 2 and the cathode foil 3 are connected to each other, that is, the terminal connecting pieces 51
．． 52, 53.54 and 61.62, 63.64 are laminated with the electrolytic paper 4 interposed therebetween in a state where they are appropriately shifted in the longitudinal direction so that they do not overlap each other. This laminate I is housed in a metal case 7 as shown in FIG. 81.8
2.83゜84 is the anode terminal of the flat electrolytic condenser, 9
Reference numerals 1, 92, 93 and 94 are also cathode terminals, and sleeve-shaped insulating spacers lO and 10 are provided on the side end surfaces of the case 7, respectively.
, ... is inserted through the case 7 in an insulated state by a fist.

The internal structure of a flat electrolytic capacitor is shown below in Figure 5 and w4.
This will be explained according to Figure 6.

The case 7 that houses the laminate 1 includes a dish-shaped main body IT and a lid 1.
2, and a fitting groove 13 is provided on the upper end surface of the peripheral edge of the main body 11.
is formed, and the above-mentioned fitting groove 1 is formed on the upper end surface of the peripheral edge of the 1M body 12.
A fitting protrusion 14 is formed to fit into the fitting groove 13, and the fitting protrusion 14 is fitted into the fitting groove 13, and the main body 11 and the lid body 12 are welded at their peripheral edges to be integrated. A case 7 is formed. Four terminal mounting holes 15 are formed through the side surfaces of the case body 11 and the lid body 12 on the same side, respectively.
, 15.15 has the cathode terminal 91.92.93.94
is the terminal mounting hole 15.15.15.15 of the case lid body 12.
Anode terminals 81, 82, 83, 84 are inserted and fixed through the insulating spacers lo, io, . . . , respectively.

The laminate 1 has an anode foil 2 and a cathode foil 3 inside its case 7.
is housed in a state where it is electrically insulated from the case 7. Terminal connection pieces 51, 52, 53 of anode foil 2 and cathode foil 3
．． 54 and 61.62, 63.64 respectively) 161.162.163.164 and 171.
172, 173, and 174 are connected by welding or other means, and one end of conducting wires 181, 182, 183, and 184 are connected to the current collector plates 161, 162, 163, and 164, respectively, by welding or other means. electric plate 17
1,172,173,174 have conductor wires 191.192.
193 and 194 are connected by welding or other means. And conductor 191.192.193.194
The other end is connected to the inner end of the anode terminal 81.82.83.84 and the cathode terminal 91.92.93.94, and has a terminal connection piece 51.52.53 of the anode foil 2 and cathode foil 3.
．． 54 and 61.62, 63, and 64 are the conducting wires 181.
182.183.184 and 191.192.193.
194 via the corresponding anode terminals 81, 82.83.8
4 and cathode terminals 91, 92, 93, and 94.

Such a flat electrolytic capacitor 20 is most suitable as a pass line for supplying power from a power supply circuit to other electronic circuits. Figure 7 shows a flat electrolytic capacitor 20 as described above.
In the drawing, 21 is a power supply circuit, and its output terminals 22, 22 are the anode terminals 8! of the flat electrolytic capacitor 20. and is connected to the cathode terminal 91. 23 is a power amplifier whose power terminals 24 and 24 are connected to an anode terminal 82 and a cathode terminal 92. 25 is a tone control circuit whose power terminals 26 and 26 are connected to an anode terminal 83 and a cathode terminal 93. Also, 27 is a preamplifier,
Its power terminals 28, 28 have an anode terminal 84 and a cathode terminal 9
Connected to 4.

Flat electrolytic capacitor 20, power supply circuit 21, power amplifier 23. Tone control circuit 25 and preamplifier 27
are mounted, for example, on a conductive mounting plate 29 by appropriate means, and the power supply circuit 21, power amplifier 23,
The ground terminals of the tone control circuit 25 and preamplifier 27 are connected to a conductive mounting plate 29 by appropriate means.
It is electrically connected to the case 7 of the flat electrolytic capacitor 20 via the mounting plate 29.

FIG. 8 is a circuit diagram of the electronic circuit device.

The power amplifier 23 is composed of a differential amplifier DA and a push-pull output circuit consisting of an NPN transistor Q1 and a PNP transistor Q2.

Differential amplifier DA receives the output signal from tone control circuit 25 at its non-inverting input terminal.

Sends the output signal to the push-pull output circuit.

Further, the output signal of the push-pull output circuit is fed back to the inverting input terminal of the differential amplifier. SP is a speaker serving as a load of the push-pull output circuit, and CL is a capacitor connected in series with the speaker SP serving as the load.

FIG. 9 shows the equal number of paths of the power supply circuit in consideration of the distributed constants of the electronic circuit device shown in FIGS. 7 and 8. In the figure, 11.12°...In is the terminal connecting piece 5 of the anode foil 2 and cathode foil 3 of the flat electrolytic capacitor 20.
1 and 61 to 52 and 62, rl, r2.・11@rfi is also a distributed resistance. Further, C1, C2, . . . cn are the terminal connecting pieces 51 and 61 to 52 of the flat electrolytic capacitor 20.
and 62 are distributed capacitors.

A distributed constant circuit consisting of 11.12***1n, rl, r2φ...rn and C1, C2...Cn is formed between the power supply circuit 21 and the power amplifier 23. Also, 11
'+'2', φφ・ln", rl', r2", @@@f
n and CI', C2'...cn'' are the distributed inductance, distributed resistance, and distributed capacitor distributed in the terminal connection pieces 52 and 62 of the flat electrolytic capacitor 20, or the portions reaching 53 and 63, and these 11', 12'.

Φφ@1n', r1', r2', ...*rn and C1"
, C2''...cn' is formed between the power amplifier 23 and the tone control circuit 25. Also, l!'', 12'', ***ll'',
rl'', r2'', easrn'' and 01', C2
""Cn' is an inductance, a distributed resistance, and a distributed capacitor distributed in the portion of the terminal connection pieces 53 and 63 leading to 54 and 64, and these li", 12", . . .
-I n ”, rl-”, r2”, I 11 @ rf
A distributed constant circuit consisting of i'', 01'', 02''...c n '' is formed between the tone control circuit 25 and the preamplifier 27.

In this way, when the flat electrolytic capacitor 20 is used as a pass line device for supplying power from the power supply circuit 21 to each electronic circuit such as the power amplifier 23, the function of the pass line device as a capacitor absorbs distributed inductance. can do. That is, in general, inductance is distributed in lead wires, printed wiring films, etc., and therefore,
Even if a large-capacity capacitor that absorbs ripple, noise, etc. is connected to the line that supplies power from the power supply device to the electronic circuit, most of the effect of installing the capacitor will be lost due to distributed inductance.
In order to more completely absorb noise and the like, it is necessary to connect a large number of electrolytic capacitors to the power supply line at intervals. However, as described above, when power is supplied using the anode foil 2 and cathode foil 3 of the flat electrolytic capacitor 2o as pass lines, the power is distributed evenly between the pass lines consisting of the anode foil 2 and cathode foil 3. Since the capacitance is distributed, it is possible to cancel the distributed inductance and absorb noise and the like. Therefore, there is no need to provide many capacitors to absorb noise and the like. Therefore, it is possible to reduce the cost and size of the device.

Furthermore, since the laminate 1 constituting the element of the flat electrolytic capacitor 20 is housed in a case 7 made of a conductive material, by connecting the case 7 to the ground line of the electronic circuit device, the anode foil 2 and the anode foil can be connected. 2 and can be electrostatically shielded. Therefore, insertion of external noise into the pass line can be more completely prevented.

As stated above, the first aspect of the present invention is.

An elongated laminate consisting of one or more pairs of anode foil and cathode foil laminated via electrolytic paper is housed in a case made of a shielding member, and multiple pairs of electrode terminals are insulated from the case. The anode foil and the cathode foil are provided with the same number of terminal connection parts as the electrode terminals, which are spaced apart along the longitudinal direction of each of the anode foils and the cathode foils, and are connected to the electrode terminals by appropriate means. It is a flat electrolytic capacitor with a plurality of locations spaced apart along the length of the anode foil and cathode foil as terminal connection portions, and each connection portion and its corresponding electrode terminal are electrically connected. Therefore, by connecting the terminals of each electronic circuit to each electrode terminal, the anode foil and cathode foil can be used as pass lines6.
A second aspect of the present invention includes a pair or a plurality of pairs of anode foil and cathode foil in which terminal connection pieces are integrally formed at appropriate intervals on one side edge, and the terminal connection pieces overlap each other through electrolytic paper. the laminated body is housed in a case made of a shielding material, and an electrode terminal insulated from the case is provided in the case corresponding to the terminal connecting piece; and corresponding electrode terminals are electrically connected to each other by appropriate means, and the anode foil and cathode foil are shifted so that the terminal mounting pieces do not overlap each other. Since they are laminated, the anode foil and the cathode foil can have exactly the same shape and size. Therefore, it is not necessary to form the anode foil and the cathode foil separately, and the number of manufacturing steps can be reduced.

A third aspect of the present invention is a pass line device characterized in that the anode foil and cathode foil of a flat electrolytic capacitor as described above are used as pass lines, and the anode foil and cathode foil forming the pass line are made of a conductive material. mosquito.

It is housed in a case. Therefore, the pass line can be electrostatically shielded from the outside of the case. Therefore, it is possible to prevent noise from outside the case from getting onto the pass line. Further, the distributed inductance distributed between the anode foil and the cathode foil forming the pass line can be canceled out by the capacitance between the anode foil and the cathode foil, and noise can be absorbed. Therefore, it is possible to eliminate the need to provide a large number of capacitors in the pass line.

A fourth aspect of the present invention includes the above-described pass line device, a power supply circuit, and an electronic circuit that receives power from the power supply circuit, and the power supply circuit is connected to each electrode terminal of the pass line device. This is an electronic circuit device using a pass line device, characterized in that the output terminal of the power supply circuit is connected to the electrode terminal of an electronic circuit that receives power from the power supply circuit. Therefore, there is no risk of noise entering the electronic circuit through the pass line device, and the performance of the electronic circuit device can be improved.

In the above embodiment, the laminate of the flat electrolytic capacitor is formed by laminating a pair of anode foil and a cathode foil with electrolytic paper interposed therebetween, but it is also possible to laminate a plurality of pairs of anode foil and cathode foil. The capacitance per medium area of the flat electrolytic capacitor may be increased by increasing the width of the case that requires the capacitance per unit length of the flat electrolytic capacitor to be a certain value. This allows the flat electrolytic capacitor to be made smaller.

Further, in the above embodiment, the anode foil 3, the cathode foil 3, and the electrode terminals 81, 82, 83, 84, 91 provided on the case
, 92.93.94, tongue-shaped terminal connection pieces 51.52.53.54 and 61, 62.63.64 are integrally formed on one side edge of the anode foil and the cathode foil. Terminal connection pieces 51.52.53.54 and 61.62.63.64 and electrode terminals 81.82.83.84 and 91.92.9
3.94 through conductive wires 18.19. However, terminal connection pieces 51, 52, 53, 54 and 6 are attached to the side edges of the anode foil 2 and cathode foil 3.
1.62.63.64 is not necessarily required. For example, the side edge of the anode foil 2 on the electrode terminal 8 side is made to protrude beyond the electrolytic paper 4 above it, and the cathode foil 3
The side edge of the electrode terminal 9 side is made to protrude from the anode foil 2, and the electrode terminals 81.82, 83.84, and 91.92.93.94 are connected to appropriate locations on the side edges of the anode foil 2 and cathode foil 3. It is not necessary to provide the terminal connecting piece 5.6 if the terminals are connected by conductive wires 18, 19, etc. The present invention can also be practiced in such an embodiment, and The connection part means the part of the anode foil and the cathode foil that is connected to the electrode terminal (and is not limited to a part specially provided for terminal connection, such as a terminal connection piece).

As described above, what is shown in the accompanying drawings is merely an embodiment of the present invention, and the present invention is capable of various embodiments and modifications, and the present invention is not limited to what is shown in the accompanying drawings. It is not something that will be done.

[Brief explanation of the drawing]

FIGS. 1 and 2 are distributed constant circuit diagrams of conventional separate circuits that supply power from a power supply circuit to other electronic circuits, and FIGS. 3 to 6 show examples of implementation of the flat electrolytic capacitor of the present invention. Figure 3 is an exploded perspective view of a laminate, Figure 4 is a reduced perspective view of a flat electrolytic capacitor, and Figure 5 is 5-5 in Figure 4.
6 is a sectional view taken along the line 6-6 in FIG. 4, and FIGS. 7 to 9 show an electronic circuit device using the flat electrolytic capacitor of the present invention as a pass line device. , FIG. 7 is a perspective view showing the main parts, FIG. 8 is a circuit diagram showing a power supply circuit from the power supply circuit of the electronic circuit device to other electronic circuits,
FIG. 9 is a distributed constant circuit diagram of the circuit shown in FIG. 8. Explanation of symbols

Claims (4)

[Claims] (1) A slender laminate made by laminating one or more pairs of anode foil and cathode foil through electrolytic paper is housed in a case made of a shielding material, and multiple pairs of electrode terminals are insulated from the case. The anode foil and the cathode foil are provided in a state where the anode foil and the cathode foil are spaced apart from each other along the longitudinal direction, and the same number of terminal connection portions as the electrode terminals are respectively connected to the electrode terminal by appropriate means. A flat electrolytic capacitor characterized by (2) - One or more pairs of anode foil and cathode foil, each having a terminal connection piece integrally formed with an appropriate distance between the side edges, are laminated with electrolytic paper interposed therebetween so that the terminal connection pieces do not overlap each other. to form a laminate, the laminate is housed in a case made of a shielding material, electrode terminals insulated from the case are provided in correspondence with the terminal connection pieces, and electrode terminals insulated from the case are provided corresponding to the terminal connection pieces. A flat electrolytic capacitor characterized by having electrode terminals electrically connected to each other by an appropriate means. (3) A slender laminate made by laminating one or more pairs of anode foil and cathode foil through electrolytic paper is housed in a case made of a shielding material, and multiple pairs of electrode terminals are insulated from the case. A flat electrolytic electrode, in which the same number of terminal connection parts as the electrode terminals, which are spaced apart from each other along the longitudinal direction of the anode foil and the cathode foil, are respectively connected to the electrode terminals by appropriate means. A pass line device comprising a capacitor, characterized in that the anode foil and the cathode foil serve as pass lines. (4) A slender laminate made by laminating one or more pairs of anode foil and cathode foil through electrolytic paper is housed in a case made of a shielding material, and multiple pairs of electrode terminals are insulated from the case. A flat electrolytic electrode, in which the same number of terminal connection parts as the electrode terminals, which are spaced apart from each other along the longitudinal direction of the anode foil and the cathode foil, are respectively connected to the electrode terminals by appropriate means. It consists of a pass line device with the anode foil and cathode foil of the capacitor as pass lines, a power supply circuit, and - or a plurality of electronic circuits supplied with power from the power supply circuit, and each electrode terminal of the pass line device An electronic circuit device using a pass line device, characterized in that an output terminal of the power supply circuit is connected to a power supply terminal of an electronic circuit that receives power from the power supply circuit.