Capacitor and inductor usage is extensive, encompassing all facets of industrial and consumer electronics. Very few circuits lack either of these components. Because the transistor gave way to the IC, and the IC gave way to the LSIC, capacitor and inductor usage continues to increase rapidly since neither of these components can be physically incorporated into ICs on a broad basis.. Though they have changed some in physical size, capacitors still perform the same basic functions. But in today's circuits, more than ever before, the tolerances and parameters of capacitors and inductors are critical to proper circuit operation. Capacitor value and tight tolerance is just one important parameter. In today’s high performance circuits, leakage, dielectric absorption, and ESR are necessary indicators of a capacitor’s ability to perform properly in circuit. Inductors too, require tight tolerances and quality checks. Unless all of these parameters can be thoroughly analyzed, troubleshooting becomes a guessing game. The Sencore LC77 “AUTO-Z” takes the guess work out of capacitor and inductor testing. It provides automatic tests of capacitor value, leakage, ESR, and a patented dielectric absorption test. Inductors are automatically analyzed for value and quality with patented tests. The LC77 is a complete, automatic, microprocessor-controlled capacitor and inductor analyzer. Its features make it ideally suited for both single component analyzing in service or maintenance work, or for large volume batch testing in a lab or incoming inspection. Features The Sencore LC77 “AUTO-Z” is a dynamic, portable, automatic capacitor and inductor tester. It is designed to quickly identify defective components by simply connecting the capacitor or inductor to the test leads and pushing a test button. The test result is readily displayed on an LCD readout in common terms. All capacitor and inductor test results may also be displayed as good/bad compared to standards adopted by the Electronic Industries Association (EIA). User defined limits may also be programmed into the LC77 for the good/bad comparison. In addition to testing capacitors for value up to 20 Farads, the LC77 checks capacitors for leakage a t their rated working voltage, up to 1000 volts. ESR is checked with a patent-pending test, and an automatic, patented test checks capacitor dielectric absorption. A patented inductance value test provides a fast, accurate test of true inductance. A patented ringing test checks coils, deflection yoke, switching power supply transformers, and other non-iron core inductors with a fast, reliable good/bad quality test. Automatic lead zeroing balances out test lead capacitance, resistance, and inductance for accurate readings on small capacitors and inductors. The LC77 is protected from external voltages applied to the test leads by a fuse in the TEST LEAD JACK and special circuitry which locks out all test buttons when voltage is sensed on the test leads. Battery operation makes the LC77 completely portable for on-location troubleshooting in all types of servicing from industrial equipment to avionics to cable fault locating. An optional SCR & Triac tester extends the LC77 test .capabilities to provide a fast, accurate test of these components. The LC77 may be interfaced into any IEEE 488 Bus system for fully automatic, computer controlled testing in a laboratory or incoming inspection area.