KR930006452A - Bulb disconnection and fuse blowdown detector - Google Patents

Abstract

The present invention solves the problem by using the characteristics of the logic (LOGIC) value of TTL7404 and TTL7486 (or C-MOS4069, C-MOS4070) in I.C.

I.C (TTL7404,7486, C-MOS4069, 4070) is inexpensive and simple to manufacture, so it is very economical because of low production cost.

The present invention is not limited to automobile light bulbs and fuses, but can be disconnected where required in an electric circuit depending on characteristics, and thus it is very useful when properly used in a required position and place. In addition, if the volume is small and the installation location is not restricted, the external shape may be appropriately modified according to the installation location. In particular, the use of the invention in the car to prevent accidents due to misjudgment of other drivers while driving or in other situations as possible in order to prevent damage to life and property.

Description

Bulb disconnection and fuse blowdown detector

1 is a connection diagram illustrating an external connection method of the present invention.

2 is a circuit diagram of the present invention.

Claims (10)

Bulb disconnection and fuse blown state detector using I / C TTL (7404,7486) input / output characteristics The I.C TTL7404, C-MOS 4069, and TTL7486 C-MOS4070 of I.C have the same number of gages as I.C. Under the first stage, the light emitting diode (LED) and the sub-buzer can be used to check the disconnection of the bulb and the blow-down state of the fuse by hearing and vision, and to use a single sub-lower (BZ) diode. (D1-D7) are used for the prevention of reverse voltage, and are disconnected and fuse-melted state detectors of electric bulbs made of a main circuit such as IC, relay (X), timer (T), and constant voltage regulator (7805). The components of the main circuit, the light emitting diodes (LED) and the sub-lowers (BZ) according to claim 3 are characterized in that the disconnection and the fuse of the bulb can be configured as a contactless device by coping with the electronic devices having the characteristics thereof. Melt State Detector Depending on the number of bulbs and fuses to be detected, the number of bulbs and fuses using the required number of ICs (TTL7404, 7486) and ICs (C-MOS4069, 4070) and the constant voltage regulator 7805 accordingly Bulb disconnection and fuse fuse detectors As the volume can be miniaturized, it is not restricted to the installation site, and the external shape can be modified according to the installation site and installed and used in a concealed place so that it can be checked only when a warning sound is generated. If the fuse is melted after a certain period of time, the fuse is turned off whenever the switch connected to the melted fuse is operated. The IC (TTL7486) is designed so that the power supply is supplied until the MAIN switch is turned off. If a light emitting diode (LED) is installed on the instrument panel of a newly manufactured car and this circuit is installed, the disconnection of the bulb and the blown-down state detector of the fuse are easier to handle than the installation in the factory. Light emitting diodes (LEDs) may use different colors of LEDs depending on the purpose of the bulb to be checked, or when using one color, a number and abbreviation may be inserted to facilitate identification. LEDs use two different colors for each of the two inputs, and the light-emitting diode (LED) can reduce the number of light-emitting diodes (half) by half (1/2). Insert the middle connector with the number of wires connected between the connectors connected to the indicator as shown in Figure 3, and install this circuit inside the interior brake lamp, and install the indicator lamp (LED) and the buzzer (BZ) at the rear. The external appearance of the casing can be used by properly modifying the bulb disconnection and fuse melt state detector ※ Note: The disclosure is based on the initial application.