High Resolution Capacitance Meter

High Resolution Capacitance Meter measures in 0.01pF digits. Total range 0pF to 50uF.

Features:

1. It has very high resolution; from 6 to 7 digits! (Others have 3 or 4 digits)

2. It has a wide range; 0pF to 50uF. (Others do not go over 0.1uF or 1uF)

3. It uses only a single cheap PIC 16F628. (Others use two ICs)

4. It does not need calibration! (Others need calibrating with a special test cap)

5. It can do auto-zeroing, floating zero and negative capacitance (relative to zero).

Prototype:

PCB & LCD

Copper side.

Some Test measurement:

With NO capacitor connected.

With 15pF ceramic cap.

0.1uF Mylar cap.

0.47uF Mylar cap.

10uF Electrolytic cap.

22pF ceramic.

Digital LC Meter

PIC Digital LC Meter:

This is one of the most accurate and simplest LC inductance / capacitance Meters that one can find. This LC Meter allows you to measure incredibly small inductance starting from 10nH to 1000nH, 1uH to 1000uH, 1mH to 100mH and capacitance from 0.1pF up to 900nF. LC Meter's circuit uses an auto ranging system so that you do not need to spend time selecting ranges manually. Another neat function is reset switch that will reset the initial inductance / capacitance, making sure that the final readings of the LC Meter are as accurate as possible.

LC Meter's Technical Specifications:

Voltage Supply: 6 - 16V
Accuracy: 1%
Full Automatic Ranging
Inductance Resolution: 10nH
Capacitance Resolution: 0.1pF

LC Meter's Inductance Measurement Ranges:      
- 10nH - 1000nH
- 1uH - 1000uH
- 1mH - 100mH

LC Meter's Capacitance Measurement Ranges:    
- 0.1pF - 1000pF
- 1nF - 900nF



Prototype testing:

Meter with no DUT attached.

Testing a 15pF NPO ceramic cap.

Another 22pF ceramic cap.

"L" mode calibration.

Reading a 100uH coil

A 680uH coil for PICKIT2.

Prototype board.

Kits Will Be Available Soon!