Icl7107 Digital Ammeter Kit Diy Module Dc 5V 35Ma 70.6X39Mm

Icl7107 Digital Ammeter Kit Diy Module Dc 5V 35Ma 70.6X39Mm Kami Menyediakan Barang yang Anda Butuhkan - Item tersedia - Buka 24 jam, kec admin lagi ketiduran - Hub Kami Untuk Menanyakan varian Barang - Pengiriman cepat 6-15 hari sampai Power Supply : As Description Model Number : 69Hf9Ff100077 Dimensions : - Operating Temperature : - Accuracy Class : As Description Display Type : Digital Only Diy Supplies : Woodworking Brand Name : Ootdty Origin : Mainland Certification : None Drop Ship : Drop Item Icl7107 Digital Ammeter Kit Diy Module Dc 5V 35Ma 70.6X39Mm Diy Kits Amp Current Meter 69Hf Ootdty Brand New And High Quality Circuit Principle: Amm-Te Ammeter Is Mainly Composed Of Icl7107, Power Circuit, Reference Voltage Source, Input Circuit And Display Circuit. 1.Icl7107 Is A Bcd Output Integral Type A/D Conversion Chip, Its Internal Includes ;Linear Amplification,Analog Switch, Oscillation, Display Driving, Etc,. 2.Power Circuit Is Divided Into Positive Power And Negative Power. Positive Power Is Input By J2,C8 Filtering. Negative Is Composed Of R8, Q1, L1, C6, C7, D2, D3 And Zd1, Which Generate -5V Voltage Is Input By Chip 26Th Pin. 3.Reference Voltage Source Is Composed Of R1, R2, Vr1, R9, U2. 36-Pin Is Reference Voltage Input Pin. Adjust Vr1 Potentiometer To Let 36-Pin Voltage Be 100Mv. 4.Input Circuit Is Composed Of J1, R5, R6 And C3. When The Current Of Measured Circuit Passes Through R5,It Will Generate A Voltage On R5. This Voltage Will Be Input To Chip 31-Pin Through R6 Current Limiting And Be Processed, C3 Is Input Voltage Filtering Capacitor. 5.Display Circuit Is Composed Of Ds1-Ds4, D1, D4, 4 Digital Tubes Can Be Drived Directly By The Chip. R10 Is Current Limiting TOOLS140018