Page 1 of 38 An Inexpensive VTCT Adapter for All Tektronix SCTs Version. 1.04.1 Page 2 of 38 An Inexpensive VTCT Adapter for All Tektronix SCTs Version. 1.04.1 Figure 1 Front cover—Tektronix 577 Semiconductor Curve Tracer displaying the characteristic curves of a TRIODE VACUUM TUBE. Page 3 of 38 An Inexpensive VTCT Adapter for All Tektronix SCTs Version. 1.04.1 AN INEXPENSIVE VACUUM TUBE CURVE TRACER ADAPTER FOR ALL TEKTRONIX SEMICONDUCTOR CURVE TRACERS © Dennis Tillman W7pF,
[email protected], Version 1.04.1, Mar. 10, 2020 CONTENTS INTRODUCTION ................................................................................................................................... 5 TEKTRONIX CURVE TRACER FEATURE COMPARISON .................................................................. 6 TEKTRONIX CURVE TRACERS .......................................................................................................... 6 VACUUM TUBE TESTER FEATURE COMPARISON .......................................................................... 8 THEORY OF OPERATION .................................................................................................................. 11 EICO 667 MODIFICATIONS................................................................................................................ 13 WHAT CAN I EXPECT WITH THE CURVE TRACER I MAY ALREADY OWN? ................................ 13 WHAT YOU WILL NEED TO MAKE THIS VTCT ................................................................................ 14 TWO CHARACTERISTIC CURVES