CN201263012Y - Voltage indication circuit device of power socket converter - Google Patents

Abstract

The utility model relates to a voltage indicating circuit device of a power supply socket converter, which is characterized in that: II-type connection is adopted in the shell of the power supply socket converter; a current-limiting resistor is respectively arranged additionally in front and back of a fuse; the other ends of the current-limiting resistors are respectively connected with a dichromatic LED; and the other end of the dichromatic LED is connected with the other pole of a power supply socket. When the voltage indicating circuit device is in normal work under the condition that voltage is input and the fuse is complete, the dichromatic LED emits lights of a color; when in other abnormal conditions, the dichromatic LED does not emit lights or emits lights of the other color, thus making the working state of the power supply socket converter to be clear; the real reason why the power supply socket converter does not output voltage is conveniently found out, thereby reducing the risk of getting electric shock and unnecessary operation of changing the fuse mistakenly. The voltage indicating circuit device has simple structure and convenient installation and reformation.

Description

Voltage indication circuit device of power socket converter

technical field

The utility model relates to a voltage indication circuit device of a power socket converter.

Background technique

There are several kinds of power outlet converters that have been widely used at present: 1. with voltage indication and fuse; 2. with voltage indication but no fuse; 3. with no voltage indication and fuse; 4. with no voltage indication and no insurance. Among them, the power socket converter with voltage indication and fuse is the most scientific and widely used. But it also has such disadvantages at the same time: when the power grid is out of power and the fuse is blown, it can only indicate that the output is in a state of no power, but it cannot indicate whether the input has voltage, and it cannot really accurately judge whether the fuse is good or bad. lead to misjudgment. Bring inconvenience to work and safety.

Technical solutions

In order to overcome the disadvantages that most of the current fuses of power socket converters cannot be judged whether they are good or bad, and whether the voltage is true or not, the utility model provides a voltage indicating circuit device of a power socket converter, which can not only indicate the power The presence or absence of the socket converter voltage can also indicate whether the fuse is good or bad when there is electricity.

The technical solution adopted by the utility model to solve the technical problem is: the voltage indication circuit device of the power socket converter, which is characterized in that: a Π-type connection method is adopted, and a current-limiting resistor is installed before and after the fuse, and both It is connected with the two-color light-emitting diode, and the other end of the two-color light-emitting diode is connected to the other pole of the power supply.

When the utility model works normally, the voltage states before and after the fuse can be monitored. When there is voltage input and the fuse is in good condition, the two-color LED emits light of one color, and in other cases, it does not emit light or emits light of a different color than normal, so that the power-on state of the power socket converter is clear at a glance.

The beneficial effect of the utility model is that when the load has no power, it can be easily determined whether the power failure or the fuse has been broken through the indication of the light-emitting diode, reducing the risk of electric shock and unnecessary mistaken replacement of the fuse. The current-limiting resistor and light-emitting element are used, the structure is simple, the cost is low, and it is easy to implement, and can be widely used in other electrical equipment with fuses.

Description of drawings

Fig. 1 is the electrical schematic diagram of the utility model.

In the figure, 1. current limiting resistor R1, 2. current limiting resistor R2, 3. fuse FUSE, 4. two-color light-emitting diode LED.

Detailed ways

In Figure 1, one end of the current limiting resistor R1 and one end of the current limiting resistor R2 are respectively connected before and after the fuse FUSE of the power socket converter, and the other ends of the current limiting resistor R1 and the current limiting resistor R2 are respectively connected to the two-color light-emitting diode The two positive terminals of the LED and the negative terminal of the two-color light-emitting diode LED are connected to the other pole of the power line.

When the fuse FUSE is intact and the input IN has voltage, the two-color light-emitting diode LED lights up in one color, and OUT has a voltage output; when the fuse FUSE is broken and the input IN has voltage, the two-color light-emitting diode LED lights up in another color, and if the input IN has no voltage , the two-color light-emitting diode LEDs are not bright, and OUT has no voltage output.

Claims (1)

1. The voltage indicating circuit device of the power socket converter, which is characterized in that a current-limiting resistor is installed in front of and behind the fuse of the power socket converter, and the other ends of the two current-limiting resistors are connected to a two-color light-emitting diode. The other end of the two-color LED is connected to the other pole of the power supply.

Images