Rectifier - TV Line Scan Boost ·Rectifier
Shielded filamentary television flyback/EHT rectifier that converts horizontal-output pulses into CRT accelerating voltage while reducing X-radiation during high-voltage operation.
1K3A is a high-voltage vacuum rectifier for television power-supply or flyback service. The supplied RCA manual excerpt was reviewed for heater data, physical sections, maximum ratings, electrical characteristics, capacitances, and stated operating conditions.
International Octal
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Pin 1 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN2Pin 2 | — | F — Filament Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN3Pin 3 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN5Pin 5 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN7Pin 7 | — | F — Filament Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| PIN8Pin 8 | — | IC Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
| CAP1Top cap | A | P — Plate (Anode) Transcribed directly from EIA chart; independent cross-check not yet performed. | Unverified EIA Base Connections chart, page 127 (uploaded BaseCodeDataCharts_OCR), base 3C |
1 physical section, each with unique specifications.
Section 1
Rectifier section; ratings and characteristics promoted where clearly attributable.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Peak inverse plate voltage DC component
22000 V
FlybackRectifier
Peak inverse plate voltage total DC and peak
26000 V
FlybackRectifier
Steady state peak plate current
50 mA
FlybackRectifier
DC output current
0.5 mA
FlybackRectifier
Tube voltage drop
225 V
Ib=7mA
Interelectrode capacitance
1.3 pF
Data set 02
Published operating points and test conditions from this source.
Peak Plate Current
50 mA
Peak Plate Current 50 mA
Average Plate Current
0.5 mA
Average Plate Current 0.5 mA
Tube Voltage Drop for plate current of
7 mA
Tube Voltage Drop for plate current of 7 mA 100 volts
# Pulse duration must not exceed 15% of a horizontal scanning cycle (
10 us
# Pulse duration must not exceed 15% of a horizontal scanning cycle (10 microseconds).
Peak Plate Current
60 mA
Peak Plate Current 60 mA
Average output/plate current
0.5 mA
Published section value
Heater voltage
1.25 V
Rated heater condition
Heater current
200 mA
Rated heater condition