JPH02119569A - Electrical component - Google Patents

Abstract

PURPOSE:To prevent the external leakage of noises by connecting a supply voltage conversion circuit and a capacitor element, housing them in a common metallic vessel and mounting the leading-out terminals of the supply voltage conversion circuit and the capacitor element to the metallic vessel. CONSTITUTION:A supply voltage conversion circuit 1 and a capacitor element 2 are connected and housed inside a common metallic vessel 3, and covered with an insulating cover 4. The supply voltage conversion circuit 1 represents an AC-DC step-up rectifier circuit and a DC-DC step-up rectifier circuit, and connected to the capacitor element 2 by leads 8 and 9, and output terminals 5 and 6 penetrated through the cover 4 are fitted. Accordingly, leakage to the outside of noises generated on the inside is prevented simply. The electric part is suitable for a stroboscopic light emitting equipment.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to electrical components used in power supplies and the like.

(Prior Art) Conventionally, electric devices such as strobes use AC-DC power supply voltage.
A conversion circuit or a DC-DC conversion circuit back-pressures or lowers the voltage to create a DC voltage, and this DC voltage is applied to a capacitor, and the charged capacitor is used as a power source for a load circuit such as a discharge tube.

(Problems to be Solved by the Invention) However, when converting the power supply voltage, noise may be generated from the conversion circuit.

When noise occurs, it has the disadvantage of causing other devices to malfunction. In particular, many strobes have built-in cameras, which can cause the electronic circuits inside the camera to malfunction.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electrical component that can improve the above-mentioned drawbacks and prevent other devices from malfunctioning due to noise.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a power supply voltage conversion circuit, a capacitor element connected to the power supply voltage conversion circuit, and a capacitor element and the power supply voltage conversion circuit. The present invention provides an electrical component consisting of a metal case housing the power supply voltage conversion circuit and the capacitor element, and terminals for the power supply voltage conversion circuit and the capacitor element drawn out from the metal case.

(Function) Since the power supply voltage conversion circuit and the capacitor element are housed in a metal case and integrated, even if noise occurs, it is shielded by the metal case, and leakage of noise to the outside can be prevented.

(Example) Hereinafter, the present invention will be explained based on the illustrated example.
This is a power supply voltage conversion circuit such as a C boost rectifier circuit. 2 is a capacitor element connected to this power supply voltage conversion circuit.

3 is a metal case in which a power supply voltage conversion circuit 1 and a capacitor element 2 are housed. 4 is an insulating blue color that seals the metal case 3. 5 and 6 are terminals provided through the lid 4 for the power supply voltage conversion circuit 1 and the capacitor element 2, respectively. Power supply voltage conversion circuit 1 is connected to terminal 5.
is connected by the lead wire 7, and the terminal 6 is connected to the electric wire B ffi.
Pressure conversion circuit 1 and capacitor element 2 each lead! lA
8 and a lead wire 9.

An apparatus using the above embodiment is shown in FIG. This Vt position shows a strobe, which is composed of a power source 10, the electric component 12 connected to the power source 10 via a switch 11, and a light emitting section 13 connected to the electric component 12.

When the switch 11 is turned on and the voltage of the power source 10 is applied to the electric component 12, the voltage is boosted by the AC-DC boost rectifier circuit 14, and the capacitor element 2 is charged. When the switch 15 of the light emitting section 13 is turned on, the discharge tube 16 is triggered, and the electric charge stored in the capacitor element 2 is discharged through the discharge tube 16, causing the discharge tube 16 to emit light.

In this device, when charging the capacitor element 2, the transformer 1
7 tends to generate noise, but even if noise occurs, the metal case 3 can prevent the noise from leaking to the outside.

(Effects of the Invention) As described above, according to the present invention, since the power supply voltage conversion circuit and the capacitor element are integrated within the metal case,
Even if noise occurs, it will not leak outside. Further, in order to prevent this noise, there is no need to particularly provide a shield structure for the external circuit. Furthermore, since the terminal 6 for the capacitor element is provided, an electrical component that can also be used as a capacitor is obtained.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a strobe using the embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Power supply voltage conversion circuit, 2... Capacitor element, 3... Metal case, 5.6... Terminal. Figure 1 Patent applicant Hitachi Capacitor Co., Ltd. Figure 2

Claims (1)

[Claims] (1) A power supply voltage conversion circuit, a capacitor element connected to the power supply voltage conversion circuit, a metal case housing the capacitor element and the power supply voltage conversion circuit, and the power supply voltage conversion circuit drawn out from the metal case. An electrical component consisting of terminals for the circuit and the capacitor element.