Illuminance displayer
The utility model discloses an illuminance displayer which uses yellow, green and red light-emitting diodes to emit light, thereby respectively displaying illuminance of low, middle and high regions. The illuminance displayer comprises a housing with six holes, a battery and a switch, and is charact...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model discloses an illuminance displayer which uses yellow, green and red light-emitting diodes to emit light, thereby respectively displaying illuminance of low, middle and high regions. The illuminance displayer comprises a housing with six holes, a battery and a switch, and is characterized in that adjustable resistors are connected between input ends and positive ends of a negation gate 1 and a negation gate 2 and photoresistors are connected between the input ends and the ground end; the yellow light-emitting diode is connected with the output end and the positive end of the negation gate 1; the output end of the negation gate 2 is connected with a positive pole of the green light-emitting diode and the positive pole of a switch light-emitting diode, and a negative pole of the green light-emitting diode is grounded; and the negative pole of the switch light-emitting diode is connected with the negative pole of the red light-emitting diode and the output ends of a negation gate 3, a negation g |
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