Digital meter for use of current and voltage
OwnerTung-Liang Liinventor
Life of this patent
Estimating the term…
Abstract
The present invention relates to a digital meter for use of the current and voltage, including a front end signal processing device, a press button input device, a central processing unit (CPU), an LCD controller, an LCD, and an alarm device. When the signals detected by the front end signal processing device exceed the digital values of the maximum or minimum limit of the signal of the current and voltage set by the press button input device, the LCD controller may drive the LCD having different colors to light. Thus, the informed person may identify the detecting results of the current and voltage according to the different colors of the LCD.
Claims4
A digital meter for use of the current and voltage, comprising:
- a front end signal processing device, a press button input device, a central processing unit (CPU), an LCD controller, an LCD, and an alarm device, wherein:
- the front end signal processing device may process the signal of the detected current and voltage, and transmit the signal into the CPU, the press button input device may set the digital values of the maximum and minimum limit of the signal of the current and voltage by the digital press buttons, and may transmit the digital set values into the CPU, the CPU may receive the signals input from the front end signal processing device and the press button input device, and may process the signals so as to drive the LCD controller and the alarm device, the LCD controller may drive the LCD having different colors to light according to the signals detected by the front end signal processing device and according to the digital values of the maximum and minimum limit of the signal of the current and voltage set by the press button input device, the alarm device has a three-color back light module, and may emit the alarm sounds according to the signals detected by the front end signal processing device and according to the digital values of the maximum and minimum limit of the signal of the current and voltage set by the press button input device.
Dependencies are inferred from the claim text.