f f f f DIGITAL PANEL METER-DPM (7 SEGMENT LED PANEL VOLT METER) Digital Panel Meter perform digital processing on or conversion and display of voltages, currents, other analog signals, and pulse signals. This project is based on popular ICL 7107 IC, which is analog to digital converter and has been designed to drive 7 segment LED display. The ICL7107 is high performance, low power, 3, 1/3 digit A/D converter. Included are seven segment decoders, display drivers, a reference, and a clock. This DPM project may be used in a wide variety of configurations Full scale reading of +/- 199.9mV (200mV) 40 VCC R4 100K 39 R1 15K R2 10K PR1 1K PRESET C1 100pF 38 37 36 35 ZD1 1.2V R3 1M C3 0.1uF 34 33 32 + - C4 C2 0.47uF 22nF R5 47K CN1 TEST VOLTAGE INPUT C5 0.22uF g2 c3 a3 g3 31 30 29 28 27 26 25 24 23 22 21 Features Supply 5V DC @ 80mA. Range 0 to 199.9mV (200mV) Low Current consumptions Low input leakage current because external reference Single supply operation On board Jumpers for range display Auto Zero and auto polarity within IC Supply Input CN2 5V DC Test Voltage CN1 0-200mV PR1 Preset for reading calibration. OSC1 OSC2 OSC3 TEST REF+ REF- CREF+ CREF- COM IN+ IN- A/Z BUFF INT V- G2 C3 A3 G3 GND 1 V+ 2 D1 3 C1 4 B1 5 A1 6 F1 7 G1 8 E1 9 D2 U1 7107 koteq ICL7107 10 C2 11 B2 12 A2 d1 c1 b1 a1 f1 g1 e1 d2 c2 b2 a2 f2 e2 d3 b3 f3 e3 T1 POL VCC VCC VCC VCC VCC POL T1 g3 f3 a3 b3 g2 f2 a2 b2 g1 f1 a1 b1 10 9 8 7 6 10 9 8 7 6 10 9 8 7 6 10 9 8 7 6 13 F2 14 E2 15 D3 16 B3 17 F3 18 E3 19 AB4 20 POL SR. QTY. REF. DESCRIPTION 1 2 CN1,CN2 2 PIN BERG CONNECTOR 2 1 C1 100pF 3 1 C2 22nF 4 2 C3,C6 0.1uF 5 1 C4 0.47uF 6 1 C5 0.22uF 7 1 C7 100uF/25V 8 4 DS1,DS2,DS3,DS4 7 SEGMENT DISPLAY - CA 9 3 J1,J2,J3 2 PIN JUMPER CONNECTOR 10 1 PR1 1K PRESET 11 1 R1 15K 12 1 R2 10K 13 1 R3 1M 14 1 R4 100K 15 1 R5 47K 16 1 R6 1K 17 1 U1 7107 18 1 ZD1 1.2V ZENER (TO-92) 19 1 SOCKET 40 PIN DIP IC SOCKET 20 1 JC02 JUMPER CLOSER g +V +V +V GND CN2 INPUT SUPPLY 5 VDC INPUT e d c DP T1 1 2 3 4 5 a b VCC DS1 7 SEG DP1 g +V a b DS2 7 SEG g +V a b e d +V c DP e d +V c DP e3 d3 c3 DP2 e2 d2 c2 DP3 VCC VCC + DP1 DP2 C6 C7 0.1uF 100uF/25V DP3 J1 JUM J3 JUM 1 2 3 4 5 1 2 3 4 5 DS3 7 SEG J2 JUM R6 g +V a b e d +V c DP e1 d1 c1 1K 1 2 3 4 5 DS4 7 SEG www.twovolt.com www.youtube.com/thetwovolt Author Rajkumar Sharma www.koteq.com 03038
KOTEQ KOTEQ www.koteq.com KOTEQ www.twovolt.com www.youtube.com/thetwovolt Author Rajkumar Sharma