LCFesR 4.5 unit is a precise, wide range LC / LCF / LCR / ESR meter (tester / checker) that measures inductance (L), capacitance (C), frequency (F), small resistance (R) and equivalent series resistance (ESR) of a capacitor inside an electronic circuit (in-circuit). It can measure the internal resistance of a battery / rechargeable battery too. The meter can be built easily with one- or double-sided throughole PCB and available electronic components (DIY). It's functions are base on an further developed AVR ATMega88PA microprocessor. There are 4 options to build or get a meter:

LCFesR meter's some beneficial properties:

(See the documentation for more details).