Digital voltmeter

• Main Authors: YANG JIMIN, HAN LIKAI
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2018
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to a digital voltmeter, voltage becomes built -in digital voltmeter circuit, chip IC1's XTAL1 port and XTAL2 port is respectively through electric capacity C1 and electric capacity C2 ground connection in the digital voltmeter circuit, the XTAL2 port that synchronal XTAL1 port connect through the crystal oscillator, chip IC1's RST port is through resistance R1 ground connection, chip IC1's EA port power connection, the EA port connects the RST port through electric capacity C3 simultaneously, chip IC1's P0.0 does the P0.6 port meet the A of LED display screen respectively the G port, while chip IC1's P0.0 does the P0.6 port connect 2 of potentiometre respectively 8 the port, 1 port power connection in the potentiometre, 1 of LED display screen 4 does the portmeet chip IC1's P2.0 respectively the P2.3 port, chip IC1's INT1 port connects chip IC2's CLK port, chip IC1's T0 port connects chip IC2's DI port and DO port simultaneously, the utility model discloses a digit easy operation is