$700.0 Buy It Now or Best Offer
free,30-Day Returns
Seller Store analog-robot
(864) 98.5%,
Location: San Bruno, California
Ships to: US,
Item: 256717677137
All returns accepted:ReturnsNotAccepted
Heathkit:Heathkit
Unit Type:Unit
TT-1:TT-1
Country/Region of Manufacture:United States
HEATHKIT TT-1 TUBE TESTER QUALITY KIT FROM CLASSIC ELECTRONIC HOBBYIST COMPANY.SEE VIDEO AND CONDITION FOR DETAILS! COMES WITH DOCS TT-1 Mutual Conductance Tube Tester withTT-1-A Extension AdapterFeaturesChecks over 1100 tube types with data suppliedIndicates Gm to 24,000 micro-mhosConstant current heater suppliesUltra-sensitive grid current testDirect-reading ohmmeter leakage testBuilt-in switch-operated calibration circuitSPECIFICATIONS—Power requirements—Voltage: 105-125, 60 cycle AC. Watts: 10-60 (dependent upon tube under test).Plate supply: (Silicon rectifiers). DC volts: 26, 90, 135, 225 plus variable 80 to 200 (Separate DC supply for space charge grids). AC volts: 20, 45, 177. Bias supply: (Silicon Rectifier). Low range: 0 to negative 5 volts DC. High range: 0 to negative 20 volts DC. Signal voltages: 2, 1, .5, .25 volts AC 5000 cycles.Filament supply voltages: .65, 1.1, 1.5, 2, 2.5, 3.3, 5, 6.3, 7.5, 10, 13, 20, 27.5, 35, 47, 70 and 115. Currents: 300, 450, 600 ma. (Note: Filament voltage is reduced 10% during the test). Testing circuits Gm: (Mutual conductance-amplifiers) 0-24,000 micro-mhos. Emission: Rectifiers and diodes. Leakage: Direct reading ohmmeter. Grid current: ¼ microampere sensitivity. Voltage regulators: Firing voltage and regulation tolerance.Low power thyratrons: Grid characteristics, conduction capabilities. Eye tubes: Control grid characteristics. Meter AC: 1000 ohms/volt (1 volt full scale). DC: 80 ma full scale.Scales: Gm: 0-3000 micromhos. VR test volts: 0-200 volts. Leakage: 0-10 megohms. Diodes O.K. Rectifiers O.K. Line check arrow at midscale. Tube complement: (1) 3A4 oscillator, (1) 12AV6 meter control. Calibration circuit: Built-in switch operated. Socket accommodations: 4-pin, 5-pin, 6-pin, 7-pin, combination and pilot light, 7-pin miniature, 7-pin sub-miniature, 8-pin sub-miniature, octal, loctal, 9-pin miniature, blank.Line voltage adjustment: Continuously variable. Roll chart mechanism: Constant tension, free rolling, thumb wheel operated, illuminated. Dimensions: Cabinet (outside): 17¾” W x 13½” H x 7½” D.
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