Vintage EICO Model 950B Resistance Capacitance Comparator Bridge Powers On For Sale
Vintage EICO Model 950B Resistance Capacitance Comparator Bridge Powers On:
The unit powers on but has not been tested. Purchased from an estate sale with a number of other electronic test instrumtents. The Model 950B is a highly flexible ac-powered bridge which measures capacitance in the range from 10 pf to 5000 mf and resistance from 0.5 Ohm to 500 Megaohm on direct reading scales, employing an electron-ray ("magic eye") tube as a visual null indicator. Measurement of resistance, capacitance, and inductance by comparison with an external complementary standard is also possible, in which case a special ratio scale is read. An invaluable feature for service work is a dual-sensitivity leakage test employing a built-in source of polarizing voltage, continuously variable from 0 to 500 volts dc. The high sensitivity leakage test is used for testing paper, mica, and ceramic capacitors and the low sensitivity test for electrolytic capacitors. The electron-ray tube is the leakage indicator in both tests. In addition, this instrument provides direct power factor measurement on the higher capacity ranges in which electrolytics are measured. The Model 950B, by the nature and accuracy of its testing and measurement facilities, will be found extremely valuable in the servicing of TV, FM-AM radio, and other electronic equipment.